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Using 99 Flux powder


#1

How is “99 Flux” powder used? I added water but it stayed gritty
instead of dissolving or forming a paste. Is that the wrong kind of
solvent?

Janet


#2
  How is "99 Flux" powder used? I added water but it stayed gritty
instead of dissolving or forming a paste. Is that the wrong kind
of solvent? 

don’t’ be so timid with it, Janet. you’r assuming a problem exists,
when there is none.

Try the stuff. It doesn’t matter if it’s a tad lumpy or gritty.
Just use it. Only add enough water to get a medium slurry, not a
thin liquid. and sure, it might stay a little gritty. components
don’t dissolve quickly, so don’t expect a super smooth paste. You
don’t need it, and it doesn’t matter. The water is only there as a
carrier. Once you heat it a bit, the water evaporates. that’s the
same with any flux. Try taking some standard paste flux that has
dried out, and note how hard and slow it is to get it to redissolve
by adding water, even if you regrind it to powder. Same components.
unless you mix a bunch, with hot water, and perhaps simmer it a
while, it won’t really fully dissolve. And as I said, that’s not a
problem. Just use it that way. it works fine.

Peter


#3
    The water is only there as a carrier.  Once you heat it a bit,
the water evaporates. 

Peter, I never thought of that! It’s just that the mixture could
never be described as “paste” and, never having seen any other kind
of paste flux, I didn’t know how this compared.

By the way, when flux (any kind) forms a glassy coating on the
silver, how do you remove it?

Janet