This is for cue makers. As a woodturner, I deal with chip out, by tool and bevel angle. In turning a material such as this, you might want to consider a different presentation of your tool bit, and or a different grind on your tool bit, so that you can rub the bevel under the cutting edge. You need to forget the way a traditional metal working lathe and bit work to understand this. In woodturning we have to rub the bevel, to keep the fibers from pulling and tearing out. I do use some metal working bits that I use in my tools for hollowing out, and they are ground similar to what you would use on a metal lathe, but you do get tear out with these. It usually doesn't matter though as it's on the hollowed out inside portion where people can't see or reach their hands to feel. If someone wants, I could experiment with some grinds on a bit to try and accomplish what I am suggesting. I would think it would work but you would have to angle the bit in a different angle than you are accustomed to. If you are a cue maker and are interested in talking about this, PM me, and I will send my phone #
Ed