Brazing torch

Edited By Niloch on 05/07/2010 21:21:04

No it was a Flame Master. I know of the Flamefast kit and this was different it was in solid cast aluminium and had an economiser trigger which you pulled in to use the torch. There was another one at the same college which had three gas supplies gas, compressed air and oxygen. It was made in Germany and was probably ‘a liberated’ item.

I have a micro flamefast burner, which is a devil to use as I have to clean out the residues left by the gas each time. I have not tried it over here yet.

Hello everyone,

I know I am kind of resurrecting an old thread here, sorry in advance if that's the wrong approach.

I recently got the Bullfinch Brazing torch, and I would appreciate your input with a problem I am having:

I am trying to braze some 8mm threaded bar to a section of 30x30x3mm mild steel

The steel is drilled 8mm and the threaded bar is sitting in hole. The steel is set on, and partially surrounded with fire bricks, but I am struggling badly to reach a temperature where the brass brazing rod runs into the joint.

Is the steel section too big for this torch?

Or would it be a flux issue? (I ordered brass brazing flux, but the company sent me silver solder flux-I am temporarily using this)

The steel gets red hot easily enough, but the rod doesn't melt (or at least certainly doesn't flow) by touching the steel - only when the flame is directly applied to it.

Would appreciate your thought,

Thanks,

Á D

If it is the 404 that you have then all the videos I have seen of it are with quite thin material so probably not getting hot enough

Thanks for the quick reply.

Do you have any experience brass brazing with propane only? I am wondering if the Sievert would give better results, or would an oxy- or air-gas torch be needed for that size of steel?

Thanks