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That stuff chews up bits big time. I used my floor standing drill press and it the shavings smoke and stink up the shop something fierce. I even had a small fire once. I now use a vac while drilling to suck up as we go. I have had to replace bits, and two saw blades because it dulls the carbide tips. I bet it wasn't pretty using that hole saw which is probably not much good anymore.
It would be sweet to have the outer skin of the hull made with that, you could drive up on rocks without breaking it.
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