On Sep 27, 2014, at 4:54 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
...
are found in clockmaker/watchmaker and gunsmith
supply shops. I have
such a set that I use whenever I can, because it can?t slip out of the
slot. There?s a nice set available from Brownell?s in the USA, about 6
width at 4 thickness choices each.
THat sounds useufl. I'll bet it has a price to match, though (not that i
object ot paying money for good tools)
I just looked up the set I have, at Brownell?s. $74 for the 22-bit set, more for the full
44-bit set which is also out of stock, strangely enough. More than I expected. I
inherited mine.
...
100 bits for $10 or so. Not strong at all but
good enough for
occasional use, and it included oddball stuff like triwing (like
Phillips but 3-fold symmetry instead of 4-fold). If you run into
There's also Torq (not Torx) which is like phillips but with the 'wings'
offset to as to bcontinuations of the sides of a cetral square. And
several others, of course.
Yes, I saw those too. And clutch, robinson of several sizes, pozidriv, ?tamper torx? and
?tamper allen? (which are drilled in the center to clear a pin in the center of the
screw?s recess), and some more.
...
Bristol spline (in 1950s electronics like the
Collins 51-J) it gets a
little harder, but those too are still available at modest prices. And
Bristol spline also turn up in classic computers. I've come across them
in the Friden flaxowriter and in the monitor section of the IBM 5155
(portablePC). Thsoe tools are very hard to find in the UK. I've yet to
find a tool shop (as opposed to a wrb site, etc) that's even heard of them.
They are still an off the shelf item here: Xcelite brand, available from Stanley Supply
(formerly Jensen Tools) among others.
paul