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.
