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Note: It has come to our attention that some inferior tool blanks are being offered by others. These blanks may be seriously undersized and
therefore may not sharpen properly in the Lindsay sharpening system. It has been noted by some of our Lindsay tool users that they may wobble slightly in the
holder, causing difficult cutting, especially of fine shade lines. By contrast Lindsay blanks are manufactured to precise tolerances to within +- .001 inch of the
3/32 inch specifications. We must warn our users, to insure proper function of your Lindsay Sharpening system, and Lindsay air tools, be sure to use authentic
Lindsay Carbalt, M42 and High speed tool blanks. Accept no substitutes!
Lindsay Carbalt™ 3/32" Square
Graver Blanks
Lindsay Carbalt gravers are a mixture of fine-grain carbide and tungsten. The mixture was
developed in close collaboration with several carbide manufacturers 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. There may only be 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 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.
Carbalt™ 3/32" square x 2 5/16"
long graver blanks are surface ground on all four sides to a tolerance of plus or minus
0.0005" of the 3/32" size assuring a consistent fit.
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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