piclist 2011\02\14\093748a >
Thread: Cutting holes in thick uPVC pipe caps
face BY : Michael Rigby-Jones email (remove spam text)

> -----Original Message-----
> From: spamBeGonepiclist-bouncesspamspammit.edu [RemoveMEpiclist-bouncesspamspam@spam@mit.edu] On
{Quote hidden}

> been
> suggestions to pre freeze. I have done that works but a better way is
> use
> 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
> cooled.
> Alcohol is a good coolant because of its low boiling point. Water will
> work
> 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
> press
> 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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Subject (change) Cutting holes in thick uPVC pipe caps

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