On 16/11/15 17:09, stuart noble wrote:
snip

Most screws bite like crazy into pvc providing you drill a small (2mm?)
pilot hole first, but self tappers are better if you have them. 10mm are
plenty long enough


Pilot holes? On this newsgroup? I thought most denizens used either a
big hammer or an impact driver. You'll be advocating clearance holes,
and countersinking, and round-head screws through metal next!

You're absolutely right about self-tappers or really, any modern
single-start woodscrew for upvc. I keep a gash,roughly re-sharpened
1/16 or thereabouts twist drill in an old hand drill for such piloting
purposes.

--
Kevin