Unquestionably Confused wrote in
:

On 2/16/2013 11:31 PM, Doug Miller wrote:
"Gramp's shop" wrote in
news:effd5331-4ba2-44a6-9a68- :

The woodworkers show was in town today and I brought one of
the broken screws and a
sample to get some opinions from the graybeards. Here's what
they had to say:

1. Square drive screws don't allow the driver to slip off --
like philips head -- when the screw
is tight leading to breakage if I overtighten.
2. Screw should be lubed -- soap or wax.

Wax only, never soap. Soap will absorb water from ambient
humidity, which promotes corrosion of the screw.

Pick up the cheapest wax toilet seal you find at Menard's or
wherever and carefully melt it down - I did mine a little at a
time in a Pyrex measuring cup in the microwave. I think the
original tip was to use a double boiler.

You know, it's a whole lot easier to just buy a can of Johnson's Paste Wax. :-)