Abrasive drill bit

Abstract

An abrasive drill bit and method of use on glass, ceramics, tile, stone and similar solid materials, both natural and synthetic. A circle is ground into the material using a cylindrical drill bit, which grinds a loose abrasive between the bit cylinder and the material. When the circle is complete, a punch-out piece of the material falls out, leaving a smooth hole. Alternatively, the loose abrasive is ground between a solid bit and the material to grind out a hole. In both methods, the loose abrasive is preferably mixed with water to form a slurry.

We claim:  
     
         1 . An abrasive cylinder bit comprising: 
 a cylinder attached to a connection means;    said connection means connected to a drill;    said cylinder comprising a cylinder base, a cylinder side and a cylinder edge distal said cylinder base;    said cylinder base connected to said cylinder side;    said cylinder edge having a smooth surface; and    said cylinder edge providing a means for grinding with an abrasive material a circle in a solid material.    
     
     
         2 . The abrasive cylinder bit as in  claim 1 , further comprising: 
 said cylinder side comprising at least one abrasive slot proximate and normal to said cylinder edge; and    said at least one abrasive slot being capable of receiving said abrasive material.    
     
     
         3 . The abrasive cylinder bit as in  claim 1 , further comprising: 
 a sweeping material oriented within a cylinder interior of said cylinder, said sweeping material capable of directing said abrasive material towards said cylinder edge.    
     
     
         4 . The abrasive cylinder bit as in  claim 1 , further comprising: 
 at least one inlet hole in said cylinder base; and    said at least one inlet hole providing a passageway for said abrasive material into a cylinder interior of said cylinder.    
     
     
         5 . The abrasive cylinder bit as in  claim 1 , further comprising: 
 at least one base cavity in said cylinder base; and    said at least one base cavity providing a passageway for said abrasive material into a cylinder interior of said cylinder.    
     
     
         6 . The abrasive cylinder bit as in  claim 1 , said connection means comprising a shaft attached to said cylinder base.  
     
     
         7 . The abrasive cylinder bit as in  claim 1 , said connection means comprising a socket in said cylinder base.  
     
     
         8 . A method of forming a hole in a solid material, said method comprising: 
 orienting a guide on a surface of said solid material;    placing an abrasive material in a guide hole of said guide;    placing an abrasive cylinder bit into said guide hole of said guide, said abrasive cylinder bit comprising a cylinder and a connection means, said cylinder comprising a cylinder base, a cylinder side and a cylinder edge distal said cylinder base, said connection means being connected to a drill;    energizing said drill to rotate said abrasive cylinder bit; and    grinding a circle through said material by grinding said abrasive material between said cylinder edge of said abrasive cylinder bit and said solid material.    
     
     
         9 . The method as in  claim 8 , further comprising: 
 sweeping said abrasive material located within an interior of said abrasive cylinder bit towards said cylinder edge.    
     
     
         10 . The method as in  claim 8 , further comprising: 
 sweeping said abrasive material into at least one abrasive slot oriented on said cylinder side and proximate said cylinder edge.    
     
     
         11 . The method as in  claim 10 , further comprising: 
 receiving said abrasive material into an abrasive material relief reservoir, said abrasive material relief reservoir being oriented proximate and lateral to said guide hole; and    cycling said abrasive material between said cylinder interior and said abrasive material relief reservoir.    
     
     
         12 . The method as in  claim 8 , further comprising: 
 stopping said grinding step when said circle is approximately ⅔ through said material;    repositioning said guide on an opposite side of said material while aligned with said circle; and    grinding on said opposite side of said material to complete said hole.    
     
     
         13 . The method as in  claim 8 , wherein said solid material is oriented in a non-horizontal plane.  
     
     
         14 . The method as in  claim 8 , further comprising: 
 ceasing said grinding step periodically before said circle is through said solid material;    washing out said circle;    reapplying said abrasive material in said guide hole; and    resuming said grinding step.    
     
     
         15 . The method as in  claim 8 , further comprising: 
 mixing water with said abrasive material to form an abrasive slurry.    
     
     
         16 . A method of forming a hole in a solid material, said method comprising: 
 placing an abrasive material proximate a cylinder edge of an abrasive cylinder bit, said abrasive cylinder bit comprising a cylinder and a connection means, said cylinder comprising a cylinder base, a cylinder interior, a cylinder side and said cylinder edge distal said cylinder base, said connection means being connected to a drill;    orienting said cylinder edge bit against a surface of said solid material;    energizing said drill to rotate said abrasive cylinder bit; and    grinding a circle through said material by grinding said abrasive material between said cylinder edge of said abrasive cylinder bit and said solid material.    
     
     
         17 . The method as in  claim 16 , further comprising: 
 placing said abrasive material within said interior of said cylinder; and    sweeping said abrasive material located within said interior of said cylinder interior towards said cylinder edge.    
     
     
         18 . The method as in  claim 16 , further comprising: 
 placing said abrasive material within said interior of said cylinder; and    sweeping said abrasive material into at least one abrasive slot oriented on said cylinder side and proximate said cylinder edge.    
     
     
         19 . The method as in  claim 16 , wherein said solid material is oriented in a non-horizontal plane.  
     
     
         20 . The method as in  claim 16 , further comprising: 
 ceasing said grinding step periodically before said circle is through said solid material;    washing out said circular hole;    reapplying said abrasive material proximate said cylinder edge; and    resuming said grinding step.    
     
     
         21 . A method of forming a hole in a solid material, said method comprising: 
 orienting a guide on a surface of said solid material;    placing an abrasive material in a guide hole of said guide;    placing an abrasive shaft bit into said guide hole of said guide, said abrasive shaft bit comprising a shaft having a first and second end, said first end connected to a drill and said second end comprising a grinding surface;    energizing said drill to rotate said abrasive shaft bit; and    grinding a hole through said material by grinding said abrasive material between said grinding surface of said abrasive shaft bit and said solid material.    
     
     
         22 . The method as in  claim 21 , further comprising: 
 initializing and stabilizing said abrasive shaft bit against said solid material with a bit point oriented proximate said grinding surface and aligned on a central vertical axis of said shaft.    
     
     
         23 . The method as in  claim 21 , further comprising: 
 mixing water with said abrasive material to form an abrasive slurry.