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Posted by Jeff Wisnia on November 1, 2006, 5:56 pm
professorpaul wrote:
> Use what are known as "sheet metal" screws. Drill a small pilot hole.
> When the screws are driven in, they cut their own threads. Any hardware
> store... various head styles. I even bet the screws that came with the
> door check might be usable. I know the ones that are used to hang
> things like Venetian blinds are usable in wood and metal. The screws
> often have a flat, but raised head, like an upside down frying pan.
> They are called "pan head" screws. Very useful for all sorts of
> things. Just don't get the pilot hole too big, or there won't be
> enough "bite" for the screws. By the same token, don't make it too
> small, or you can shear off the screw, which is going to be VERY
> difficult to remove!
>
And, if the metal is quite thin, it's even better to drill a tiny hole
through it and then use an awl (or icepick) driven into the hole to
enlarge it by extruding some metal rearward, which gives the sheet metal
screw more to bite into so it's not as likely to get pulled out when
someone tries to push the door in on you.
Jeff
--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.
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