Quote from cerberus333 on January 2, 2014, 21:36
Regarding melting metals, most jewelry casting (gold, silver, bronze, nickle-silver alloy ) can be melted with an
air/acetylene torch. Using oxygen is not necessary.
here is a link for a fairly standard jewelry torch
and a "b" tank runs roughly $80 and a fill will last for many melts.
My apologies to you but I have to disagree with this choice of set up.
The B tank does not use oxygen. I actually started out at my Kitchen table using one soldering jump rings and bails to nuggets back in 79 and that is about all it is good for. But only because it was easy to use in my house and even then that wasn't a real good idea to have in the house. I don't recommend it now looking back on it it was a silly thing to do. A garage would be the place to do this kind of work.
stay away from acetylene. it is just to expensive, dirty and it can add carbon to your metals in the melting process, although there are probably many who still use it it is just not the gas of choice. Propane is commonly used for torches of all kinds from bench to casting. for the higher temp metals they might use acetylene but I have yet to need it in my 30 plus years at the bench and I have worked on sizing and soldering all kinds of platinum. Even in High-school jewelry class we used natural gas for casting.
Go to the site I posted earlier Gesswien is one of many companies in our industry for these supplies.
Don't start with the Btank for 80 bucks you can order a torch from you local welding shop to use with propane. the tips originally were called MAP gas tips. but we just used propane. a standard torch from my welding days sits in the casting room for casting and it is using propane. gave up on the MAP gas tips they are a PIA.
any way I had to say something I have been handling torches since I was 15 and believe me the Btank is not the way to go.
This has been a standard for melting and casting.
this is what most of us use at the bench
regulators and torch