Molding pieces, molding piece removably engaging devices, kits and systems, and methods

Abstract

A molding piece, comprising a molding piece structure and at least a first magnetic element, wherein cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape. In some embodiments, the first magnetic element is in a first groove in the molding piece structure, cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape, and/or the molding piece structure further comprises a protruding rib. Also, a removably engaging device, comprising a removably engaging device structure and a first element, wherein the first element comprises a magnetic element and/or a magnet-adhering element. In some embodiments, a removably engaging device structure comprises a rib and/or a groove. Also, kits and systems comprising molding pieces and removably engaging devices, and methods.

1 . A molding piece, comprising:
 a molding piece structure; and   at least a first magnetic element,   wherein:   the molding piece structure has a first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the first groove.   
     
     
         2 . A molding piece as recited in  claim 1 , wherein the molding piece structure imaginary axis is in the same relative location in each of said cross-sections. 
     
     
         3 . A molding piece as recited in  claim 1 , wherein cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape. 
     
     
         4 - 7 . (canceled) 
     
     
         8 . A molding piece as recited in  claim 1 , wherein:
 at least a first region of a surface of the molding piece structure is substantially flat, and   the first groove is adjacent to the first region of the surface of the molding piece structure.   
     
     
         9 - 20 . (canceled) 
     
     
         21 . A molding piece as recited in  claim 1 , wherein:
 a perimeter of an imaginary section of the molding piece, the imaginary section being perpendicular to the molding piece structure imaginary axis, comprises a back region and a profile region, the back region is substantially straight, and the profile region has a plurality of bends and/or curves, and   the first groove is in the profile region.   
     
     
         22 . A molding piece, comprising:
 a molding piece structure; and   at least a first magnetic element,   wherein:   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape.   
     
     
         23 - 37 . (canceled) 
     
     
         38 . A molding piece, comprising:
 a molding piece structure; and   at least a first magnetic element,   wherein:   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the molding piece structure further comprises at least a first a protruding rib, and   the first magnetic element is on a surface of the molding piece structure.   
     
     
         39 - 53 . (canceled) 
     
     
         54 . A molding piece removably engaging device, comprising:
 a removably engaging device structure; and   a first element,   wherein:   the first element is in contact with the removably engaging device structure,   the first element has a first element imaginary axis, and   the first element comprises at least one of a magnetic element and a magnet-adhering element.   
     
     
         55 . A molding piece removably engaging device as recited in  claim 54  wherein:
 the removably engaging device structure further comprises at least a first rib, 
 the first rib has a first rib imaginary axis, and 
 the first rib imaginary axis is substantially parallel to the first element imaginary axis. 
 
     
     
         56 . (canceled) 
     
     
         57 . A molding piece removably engaging device as recited in  claim 55  wherein:
 the molding piece removably engaging device further comprises at least a first groove, 
 the first groove has a first groove imaginary axis, 
 the first groove imaginary axis is parallel to the first element imaginary axis, and 
 the first element is at least partially in the first groove. 
 
     
     
         58 - 60 . (canceled) 
     
     
         61 . A molding piece removably engaging device as recited in  claim 54 , wherein:
 the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis, and   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the removably engaging device structure further comprises at least a second groove,   the second groove has a second groove imaginary axis,   the second groove imaginary axis is parallel to the first element imaginary axis, and   the first element is in the second groove.   
     
     
         62 . A molding piece removably engaging device as recited in  claim 54  wherein the first element comprises magnetic tape. 
     
     
         63 . (canceled) 
     
     
         64 . A molding piece removably engaging device as recited in  claim 54  wherein:
 at least a first region of a surface of the removably engaging device structure is substantially flat, and 
 the first element is adjacent to the first region of the surface of the removably engaging device structure. 
 
     
     
         65 - 75 . (canceled) 
     
     
         76 . A molding piece removably engaging device, comprising:
 a removably engaging device structure; and   at least first and second elements,   wherein:   the first element is in contact with the removably engaging device structure,   the second element is in contact with the removably engaging device structure, and   each of the first element and the second element comprises at least one of a magnetic element and a magnet-adhering element.   
     
     
         77 - 93 . (canceled) 
     
     
         94 . A molding piece removably engaging device, comprising:
 a removably engaging device structure; and   a first element,   wherein:   the first element comprises at least one of a magnetic element and a magnet-adhering element,   the first element is in contact with the removably engaging device structure,   the removably engaging device structure comprises at least a first rib,   the first rib has a first rib imaginary axis,   the first element has a first element imaginary axis,   the first rib imaginary axis is substantially parallel to the first element imaginary axis.   
     
     
         95 - 98 . (canceled) 
     
     
         99 . A molding piece removably engaging device, comprising:
 a removably engaging device structure; and   a first element,   wherein:   the first element comprises at least one of a magnetic element and a magnet-adhering element,   the first element is in contact with the removably engaging device structure,   the first element has a first element imaginary axis,   the removably engaging device comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis, and   the first element is spaced from the first groove.   
     
     
         100 - 103 . (canceled) 
     
     
         104 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the molding piece first groove.   
     
     
         105 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first element is capable of being positioned within the molding piece first groove.   
     
     
         106 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first magnetic element is capable of being positioned within the first groove of the removably engaging device.   
     
     
         107 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 55 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove and a second groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first rib of the removably engaging device is capable of being positioned within the molding piece second groove.   
     
     
         108 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove,   the molding piece structure further comprises a molding piece first rib, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the molding piece first rib of the molding piece structure is capable of being positioned within the first groove of the removably engaging device.   
     
     
         109 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape.   
     
     
         110 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first element is capable of being positioned within the molding piece first groove.   
     
     
         111 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first magnetic element is capable of being positioned within the first groove of the removably engaging device.   
     
     
         112 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 55 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   the molding piece structure further comprises a molding piece first groove,   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first rib of the removably engaging device is capable of being positioned within the molding piece first groove.   
     
     
         113 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib, and   cross-sections of the first protruding rib along said imaginary planes are substantially the same size and shape for a distance that is at least 80 percent of a length along the molding piece structure imaginary axis from the first end of the molding piece structure to the second end of the molding piece structure,   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the first protruding rib of the molding piece structure is capable of being positioned within the first groove of the removably engaging device.   
     
     
         114 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib, and   the first magnetic element is on a surface of the molding piece structure.   
     
     
         115 . A kit comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib,   the first magnetic element is on a surface of the molding piece structure, and   the molding piece and the first molding piece removably engaging device are configured such that at least a portion of the protruding rib of the molding piece structure is capable of being positioned within the first groove of the removably engaging device.   
     
     
         116 . A kit comprising:
 at least first and second molding piece removably engaging devices,   each of the first and second molding piece removably engaging devices comprising a molding piece removably engaging device as recited in  claim 54 .   
     
     
         117 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         118 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove,   at least a portion of the first element is positioned within the molding piece first groove, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         119 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove,   at least a portion of the first magnetic element is positioned within the first groove of the removably engaging device, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         120 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 55 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove and a second groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove,   at least a portion of the first rib of the removably engaging device is positioned within the molding piece second groove, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         121 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the first magnetic element is in the molding piece first groove,   the molding piece structure further comprises a molding piece first rib,   at least a portion of the molding piece first rib of the molding piece structure is positioned within the first groove of the removably engaging device, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         122 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         123 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   at least a portion of the first element is positioned within the molding piece first groove, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         124 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   at least a portion of the first magnetic element is positioned within the first groove of the removably engaging device, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         125 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 55 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   the molding piece structure further comprises a molding piece first groove,   at least a portion of the first rib of the removably engaging device is positioned within the molding piece first groove, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         126 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis,   the molding piece comprises a molding piece structure and at least a first magnetic element,   the first magnetic element is in contact with the molding piece structure,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   cross-sections of the first magnetic element along said imaginary planes are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib,   cross-sections of the first protruding rib along said imaginary planes are substantially the same size and shape for a distance that is at least 80 percent of a length along the molding piece structure imaginary axis from the first end of the molding piece structure to the second end of the molding piece structure,   at least a portion of the first protruding rib of the molding piece structure is positioned within the first groove of the removably engaging device, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         127 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib,   the first magnetic element is on a surface of the molding piece structure, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         128 . A system comprising:
 a molding piece, and   at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the removably engaging device further comprises at least a first groove,   the first groove has a first groove imaginary axis,   the first groove imaginary axis is substantially parallel to the first element imaginary axis   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape,   the molding piece structure further comprises at least a first protruding rib,   the first magnetic element is on a surface of the molding piece structure,   at least a portion of the protruding rib of the molding piece structure is positioned within the first groove of the removably engaging device, and   the first element is magnetically adhered to the first magnetic element.   
     
     
         129 - 130 . (canceled) 
     
     
         131 . A method comprising:
 positioning a molding piece relative to at least a first molding piece removably engaging device as recited in  claim 54 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the molding piece first groove,   such that:   the first element is magnetically adhered to the first magnetic element.   
     
     
         132 - 142 . (canceled) 
     
     
         143 . A method comprising:
 positioning a molding piece relative to at least a first molding piece removably engaging device as recited in  claim 76 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the molding piece first groove,   such that:   the first element is magnetically adhered to the first magnetic element.   
     
     
         144 . A method comprising:
 positioning a molding piece relative to at least a first molding piece removably engaging device as recited in  claim 94 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the molding piece first groove,   such that:   the first element is magnetically adhered to the first magnetic element.   
     
     
         145 . A method comprising:
 positioning a molding piece relative to at least a first molding piece removably engaging device as recited in  claim 99 ,   wherein:   the molding piece comprises a molding piece structure and at least a first magnetic element,   the molding piece structure has a molding piece first groove,   the molding piece structure has a first end and a second end,   the molding piece structure has a molding piece structure imaginary axis that extends through the first end of the molding piece structure and the second end of the molding piece structure,   cross-sections of the molding piece structure along imaginary planes perpendicular to the molding piece structure imaginary axis are substantially the same size and shape, and   the first magnetic element is in the molding piece first groove,   such that:   the first element is magnetically adhered to the first magnetic element.