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Compressed Air Propane Torches

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catceefer:
I did have a go at doing this last year, but without any success, but I can see why now. I borrowed an old oxy-acetylene torch and tried it with propane and compressed air, but unsuccessfully. Either the flame went out with the air turned on or was it large, flaring and cold orange with just the gas. I did try enlarging the jet, but to no avail. I did not try shrouds of any sort or countersinking the jet.

I shall be getting the torch back again shortly, so shall have another go, this time with a bit more structure to my efforts. I need a large, hot flame, not just a hot one. The atmospheric torch that I normally use brazes perfectly well, as long as the piece is small enough. The dragon in the attached picture is at the limit of current rig.

Regards,

James.

Manxmodder:
WOW! I like your Dragon very much,James. :clap: :clap:.....OZ.

vtsteam:
Hey, Cool catceefer!! :thumbup: :beer:

dsquire:
James

Now you are geting our attention. I can see a lot of back yard treasures turning into front yard art pieces. Well done.  :D  :D

Cheers  :beer:

Don

catceefer:
Just a quick update: I have obtained an oxy-acetylene torch, bought a length of fat tube, found and drilled some scrap steel and cobbled together a large burner. On just propane, it puts out a large amount of heat, but with a scarily diffuse, large and unusable flame. I now need to try and hook up the oxygen pipe to the compressor and try again.

UPDATE TO UPDATE. Just hooked the torch up to the compressor and tried again: success! It has a nice, bright blue flame, totally controllable and, if the roar is anything to go by, very powerful. I need to tidy the burner up a bit, mainly because the jet is in at a slight angle and the flame is not central to the shroud, but otherwise, it is ready.

Once it is finalised, I shall post some pictures and, if possible a video of it in use.

Regards,

James.

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