|Stone Carving Point Tool|
Guidelines shown below are for the cutting edge angle.
Point tools generally use a sharper angle, in the lower end of the range. Also, point tools are typically ground with an overall convex grind.
Frequent sharpening is recommended to maintain the tool's shape, and is needed for safe performance of the tool.
(e.g., chalk, soapstone, & pumice)
|25° - 35°
(e.g., limestone & marble)
|30° - 40°
(e.g., granite & basalt)
|40° - 60°
||Carbide inserts are usually embedded in the tips of these tools.|
Use larger angles for roughing out, and sharper (more acute) angles for finishing cuts.
Special Notes for Tools with Carbide Inserts: Do not cool by dipping in water : this will generate shocks in the metal, and cause the carbide to crack.
When sharpening, one of the following options is recommended.
Special thanks to Oleg Lobykin at StoneSculpt - Custom Stone Carving for providing the guidance.