Originally Posted by
bergerud
I regard the 1/8" cutting bit, the 1/16" deep carving bit, and the 1/32" carving bit to be delicate bits. Very useful but require extra precautions. Set small minimum pass depths for the 1/8" cutting bit. Use best for soft wood and optimal for hardwood and do not carve with the grain when using the 1/16" deep bit. Use best or optimal with the 1/32" bit. When these bits get dull, I think they all break.
I would suggest that the 1/8" cutting bit needs to be assigned multiple passes, only if the wood is of a material that will "close up" behind the bit. Sometimes putting pressure on only the tip of the bit, will snap it. Not following the 7" inch rule will snap it, too.
I have also always followed the rule that hardwoods can be carved in best, while your looser grained woods (softwoods) should be carved in optimal.
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