I haven’t contributed in a while due to being very busy with
graduate school, but I am having an issue that my tutor just wants
to solve with flux but here’s the deal–
I am scoring and folding stainless steel sheet into jewelry-sized
work and am having an issue with getting the silver solder to flow.
The first time it didn’t work because the flux failed due to the
heat. The second time I tried Firescoff. It was still working when I
gave up. The solder just balled and flattened a little bit.
A German flux has been recommended to me (by my tutor) but I don’t
recall the name right off. I don’t know if it would work better than
I am using british medium silver solder but I don’t know the alloy
of stainless… My torch is natural gas and compressed air.
Is it a fluxing issue? An alloy problem? Do I need to direct the heat
differently? Is it contamination of some sort? From the torch
perhaps? Do I need to prepare the surface differently? I chemically
cleaned and sanded the joins. Is that enough?
I have silver-soldered stainless before, 18-10 tableware
specifically, and I was using an American high-heat paste flux (can’t
recall the name of it either. Its been years…) and an acetylene
torch. That’s why I ask about the torch.