3 Dec
1999
3 Dec
'99
5:18 p.m.
On Dec 3, 16:35, CLASSICCMP(a)trailing-edge.com wrote:
The indium-rich solders are *really* neat stuff, if
you ever get a
chance to work with them. Melting temperatures down to near room
temperature
are available, as well as entire series of solder
alloys with graduated
melting temperatures for building up intricate assemblies. And many
indium
solders will even wet and stick to *glass*.
Yes, you just reminded me of a visit years ago to an optical works owned by
a friend's father. How do you mount an unfinished non-circular glass lens
in a lathe (of sorts) to finish it? Answer: you take some LMP alloy such
as you describe, melt it in a short cylindical mould, float the lens on
top, let it cool, and mount the cylinder with glass attached in the lathe
chuck. To remove the alloy later, place it in a warm water bath.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
3 Dec
3 Dec
5:50 p.m.
Pete Turnbull wrote:
Apologies in advance for perpetuating this off-topic thread, but at
the optical shop where I worked one summer during my college years,
the "LMP alloy" used for such jobs was either "wax" or
"pitch" (pine
tar), not anything as esoteric as indium metal.
-- Jim McCarthy
jkmccarthy(a)pacbell.net
And many
indium solders will even wet and stick to *glass*.
Yes, you just reminded me of a visit years ago to an optical works
owned by a friend's father. How do you mount an unfinished non-
circular glass lens in a lathe (of sorts) to finish it? Answer:
you take some LMP alloy such as you describe, melt it in a short
cylindical mould, float the lens on top, let it cool, and mount the
cylinder with glass attached in the lathe chuck. To remove the
alloy later, place it in a warm water bath.
9158
days inactive
9158
days old
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pete＠dunnington.u-net.com -
res008pw＠gte.net