Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Inkjet printing to make powdered copper
From: Richard Mustakos <rmustakos@...>
Date: 2004-03-20
Brewers,
I want to try using an inkjet to moisten a mix of Cu, Sn/Pb and flux
powders to make them stick together and to a substrate. Then I can dump
or blow the remaining dry powders off and reflow the solder to hold the
copper to the substrate. I've been looking for powdered copper, solder
and flux. I've had some success with finding copper (10g/$, 0.5 kg
min). So far, no joy on powdered (dry) flux. Powdered solder exists,
and I have even seen references to flux coated solder (reduces
oxidation), but so far, I have not found a company that sells powdered
solder. They only seem to produce it for use in solder paste. Do any
of you know of an electronics friendly, dry flux powder? Water soluble
is even better. I've found a number of flux powders, but they all seem
to be for brazing. One that I don't know what it's used for is Ammonium
Chloride: UnitedNuclear.com says: "Ammonium Chloride is a common
soldering flux used for joining metals together." Does anyone know if
NH4Cl is suitable for electronics? If so, I can get 2 oz for $2 there.
Any ideas on solder powder supplies?
Do any of you live in Southern California? I don't have a laser printer
yet, and would like to try a couple of things. I'm in the Thousand Oaks
area. Now that you know, please don't stalk me ;-)
RM