Andy Dingley wrote:
On Thu, 19 May 2005 16:13:21 +0100, Bill Woods
wrote:

But now I am tending to prefer these Supadrive/Pozidrive headed
chipboard screws.

What's a "chipboard screw" ? If you mean the Screwfix Goldscrews (if
they're still available), then they're perfectly adequate on
anything. A
_real_ chipboard screw though has an even finer pitch, usually by
being
a twin start thread (Screwfix's Quicksillvers). These are OK for
most
timber, but you'll get problems with the softest ones, such as
western
red cedar or hemlock.

The ones to avoid are drywall or plasterboard screws. They're
brittle.

I use those too, and self tappers. And occasioanlly flat ended ones
with the coarse wood type thread (not sure what theyre called)

Any coarse thread screw can be used successfully in wood. PB screws may
suffer a low level of breakages if you dont use a pilot hole, so I use
them where Im doing a pilot hole, or less often in place where the
occasional broken scrwe will be ok.


NT