Rotary chisels may replace grinding burr...

woodworker.com: "Solid carbide will provide years of top performance. Designed for high speed rotary tools (DREMEL®, etc.) or die grinders with larger profiles. Work equally well on wood, marble, limestone, steatite, alabaster, bronze, aluminum - even stainless steel. Unique triangular shape lets you see where you are cutting, plus it dissipates heat rapidly. $Over $25 each with 1/8 inch or 1/4 inch shanks."