I have been using oxyacetylene with a "Little torch" all my jewelry life. Early on I added a flux tank to the acetylene line"...
Query from Tom Kruskal about fuel for platinum soldering.
Acetylene is not recommended for platinum soldering because platinum
is easily contaminated by carbon and acetylene is a carbon rich gas
producing a very sooty flame until mixed with oxygen. Generally
speaking, keep all forms of carbon away from platinum, especially when
soldering at high temperatures. Do not, for example, use the charcoal
block to solder on.
Platinum does not oxidize so you can get away with acetylene by using
an excess of oxygen in the mix, producing the oxidizing flame that you
want to avoid when soldering silver or copper.
You can use the oxy-hydrogen set up that you indicate, but you have to
be careful with the hydrogen, especially indoors. There is a certain
risk there. Check with your gas supplier for details.
I have been using oxy-propane successfully with the Little torch using
the number 6 tip and feel that this is perfectly adequate for rings
and pendant sized objects. Personally I like to keep things as simple
as possible, and if it works don’t fix it.
Alan Revere has a chapter on platinum in his “Professional
For more contact Jurgen Maerz at Platinum Guild
Ricco Gallery of Contemporary Art Jewelry
125 W German St /PO Box 883
Shepherdstown, WV 25443-0883