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| Drill a long 30mm hole through a 340mm piece. |
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| NeoTech:
Masonry drill is something i got suggested from different sources. they need to be sharpen in a different angle, and well go really damn slow.. Anyone tried that ?? But yes, drilling to a undersize is what i aimed at anyway, but never used a between center boring bar. Need to read upon that. =) |
| vtsteam:
Something like this -- doesn't have to be a round bit, could be a square lathe bit, or just an insert. basically a piece of rod with center drilled ends and a tool bit somewhere near the middle. Also, this one is sticking out rather far. Could be just barely showing and still work. Also the baar here is rather heavy. You probably don't want to drill any bigger hole to start with than you have to, so the boring bar will be relatively small diameter. 5/8" seems about right for your workpiece. You will need to drill a 3/4" hole for that. You will probably want to step drill the hole to start with up to that size. Good Luck! |
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