MELT COPPER IN 8SEC POWERFUL BRAZING GAS TORCH DIY homemade blow torch how to make brazing torch

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HOW TO MAKE A POWERFUL BRAZING TORCH FROM SCRATCH
in this video we wil see how to :
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[michaelhorn]

Nice build and great re-cycle of the broken rivet tool. As for your brazing skills, I can only repeat the tipps/comments of some other fellows: you're starting brazing by far to early. Your burner has certainly enough temperature/power for the job (at least for such small parts), BUT you need to get the part to brazing temp first and only then start fluxing and melting the brazing rod. For steels a good indication for having reached brazing temp. is usually when the part starts to be of cherry red colour.
If you start earlier, you only burn the flux and with that the flux is not working anymore at all. Then you get a so called "cold braze" with internal pollution of burned flux which consequently weakens your braze joint.

[ridwanepribadeeh]

ALLAAHU AKBAR.
SALAM DARI JAKARTA INDONESIA.

[ludditeneaderthal]

Don't use the torch flame to melt the filler rod, use the heat of the part. That avoids the filler just sitting on top in a ball. When you flux, wait for it to actually bite before adding filler.

So, ignore the outer flame (yellowish cone), and use the inner blue "flower" to heat the part. When the part goes dull red, flux. Keep the filler rod in the yellow cone to build heat in it, but not melt. Work the "blue flower" over the joint until its bright red, and the flux has wet out, and floated off the oxides and crud (black stuff floating on top of the puddle of flux). Now put the filler into the "blue flower", touching the joint. If everything is hot enough, you should only have to do a quick dab, and the filler will melt and flow out a bit. Pull the filler rod away (back into the yellow cone so it stays hot) and use the blue flower to add heat where you want the flowing liquid filler to travel. Repeat the heat, dab, flow steps until your joint is to your liking.

[airberg]

You gotta get that flame much closer, you're not heating the metal enough to braze. Aim for the "flower" of the flame, not the tips of the longer flame. Itll heat a lot quicker

[kroscuro]

Get some powdered Borax to use for flux.