Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

What gas and blowtorch do you use for Silver Brazing?

I have LPG (smaller flame) that runs of a 9Kg BBQ bottle, MAPP gas and acetylene via a Turbo Torch.
MAPP gas is great as is the acetylene/Turbo Torch, but its really easy to over heat a small brass fitting when brazing it to copper pipe and for the brass to slump/melt.

Thinking about buying one of these sets (looks like a Sievert copy??) for larger brazing jobs like small boilers and larger brass piece brazing.
So interested in what gas(s) and what torch(es) you use.

https://www.bunnings.com.au/bossweld-lpg-propane-professional-heating-torch-kit_p0253336

Your link is broken...

Just in cast you haven't seen it, Blondihacks posted a video last week about silver soldering specifically for model steam applications.

Its been awhile since I've silver brazed anything, but I use a silver brazing tip on my oxy-acetylene torch set. I have 2 different heat melt silver brazing wire, I have map gas, but as I recall it wasn't up to the job. But you are correct Jim, I've ruined a few pieces with to much heat.

MAPP gas and acetylene copper to copper....brilliant.
It just takes a couple of seconds too long to melt/slump brass when its brass/copper or brass/brass.