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Letter 5955
Need to gold plate over plugged holes in
alum plate
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For optimum electrical conductivity, I need to hard gold plate an
aluminum vacuum plate (.5" x 8" x 8") that has been lapped for a very
flat and smooth surface on the top. The top of the plate has 300 pin
holes (.025) thru the plate. I need to plug up 200 of the holes prior
to hard gold plating. The plate is used in a clean room.
Can you advise what method of fill will be compatible with the
nickel / gold plating process? I'm hoping not to have to use alum
.025 dowels.
thanks, Brent
Brent Cadroit
- San Diego, Cal.
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That is one nasty job. So tiny and so many is a relatively small
area.
I would check to see if any vendor makes a "pull plug" out of soft
silicone. A 0.030 would probably be a proper size.
You can get taper plugs that small, but they are not easy to
install.
You can take vinyl tubing,, about ).030 OD, cut the ends on a
taper at appropriate lengths and pull these thru. They work, very
well, but are more time consuming than a pull plug.
Do you absolutely have to plug them, Could 0.001 oversize and
plated do the same thing? I assume that they can not be plated and
chased afterwards because of edge burrs.
James Watts
- Navarre, Florida
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I dont have to plug the aluminum block before gold plating.
So, can you advise a gold type filler to fill the holes after the
plate has been gold plated?
thanks, Brent
Brent Cadroit
- San Diego, Cal.
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I can't speak for James Watts, but I'm certainly lost now, Brent
:-)
I don't have even a clue what you are looking for. Please explain
what you mean by "I need to plug up 200 of the holes prior to hard
gold plating" but "I dont have to plug the aluminum block before gold
plating".
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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Me too.
James Watts
- Navarre, Florida
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