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Lindsay Tungsten Carbide "Carbalt" 3/32" Square Graver Blanks

Lindsay Tungsten Carbide gravers are a mixture of fine-grain carbide and tungsten. The mixture was developed in close collaboration with several carbide manufactures for the specific use of hand engraving and  impact resistance.  These gravers can be ground and shaped with either a silicon carbide grinding wheel, a diamond grinding wheel or a diamond hone.  When rough grinding, if the material becomes hot, DO NOT quench in water.  Heat will not anneal or damage the material as it does high-speed, tool steel or tool steel with cobalt, but quenching while it is hot will cause the the mixture to become brittle causing the point of the graver to break more easily during use.  Water may be used to keep the heat down in general though.  Do this by grinding until the surface being ground becomes only warm to the touch and then dip in water.  You may only get a second or two of grinding between dipping, but keep dipping in and out of the water during grinding.  This will keep the graver from ever getting hot, assuring the material does not become damaged.  The type of grinding that builds up heat is usually done to rough the graver blank to shape.   For final shaping and sharpening use a diamond lap either by hand or with a slow speed power hone which will not cause excessive heat.

Lindsay Tungsten Carbide 3/32" square x 2.3" long graver blanks are surface ground on all four sides to a tolerance of plus or minus 0.001" of the 3/32" size.   Assuring a consistent fit. 

2 pack     $32.00
5 pack     $75.00
10 pack    $140.00


Graver Grinding

Precautions should be taken when grinding high speed steel, tool steel, carbon steel, tungsten carbide gravers.  Dust from grinding gravers can cause nose, throat, skin and eye irritation and temporary or permanent respiratory disease in a small percentage of exposed individuals.

Take the following safety precautions:
1. Always grind gravers wet.  If using a diamond lap, coat the lap with oil or water to keep the grinding dust from becoming airborne.
2. Grind with adequate ventilation.
3. Avoid breathing dust or mist.
4. Minimize prolonged skin contact with grinding dust.
5. Wash hands and clothing thoroughly after being exposed to grinding dust.  Wash hands after grinding and before eating or smoking
6. Clean up grinding dust with wet paper towels or rags and discard of properly.

 

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