On Sun, 5 Sep 2004 19:55:03 +0100, Paul Mc Cann
wrote:

With a screw threaded all the way to the top, you have to apply enough
torque to break the thread formed in the wood, before the screw will continue
to turn and bring the two bits of wood flush.

..........or by pre-drilling a clearance hole in the top plank. Much
easier and more precise, imho.

Hi,

This might not be good idea for outdoor stuff like window frames
though.

cheers,
Pete.