I have been using oxyacetylene with a “Little torch” all my jewelry
life. Early on I added a flux tank to the acetylene line which
automatically adds flux into my flame. This has allowed me to solder
gold filled very successfully and keeps all soldering and annealing
operation very oxide free. Although it does clog up the torch and
lines and requires maintenance, it’s worth it!
Recently, I’ve been doing a lot of Platinum and my initial tests
found my system to work just fine even though acetylene is not
recommended for Platinum. Also I use a heat-treatable Plat. alloy
which, unlike regular alloys , does require fluxing as it does
oxidize. I have had problems with weak solder joints, however, which
I wonder might be helped by switching to Oxy-Hydrogen.
Does anyone have experience with this and can I just replace the
acetylene tank and regulator in my system with a hydrogen tank and
regulator and keep everything else (flux tank, torch etc.) the same?