Cutting holes in thick uPVC pipe caps
Michael Rigby-Jones email (remove spam text)
> -----Original Message-----
> From: mit.edu [ piclist-bouncesmit.edu] On piclist-bounces
> suggestions to pre freeze. I have done that works but a better way is
> coolant to keep the plastic below its melting point as it being cut.
> Plastic is
> an insulator and doesn't conduct heat very well so the bit needs to be
> Alcohol is a good coolant because of its low boiling point. Water will
> quite well but needs more care. It the plastic starts to stick to the
> it isn't
> cool enough.
> For plastic caps that I have drilled I have usually used a mill or
> at relatively low speed.
I've even managed to use the "spade" bits designed for boring holes into
wood with great success on soft plastics like PVC.
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In reply to: <4D558226.46F6CC7F@bytecraft.com>
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