Gallery, Projects and General > Neat Stuff
Brazing and Cutting with Propane
vtsteam:
I found these videos interesting enough to try it.
Brazing:
Cutting:
A few additional points.
You must use a "T" Grade hose (not the usual "R" for acetylene).
I found that my regulator directly fit a standard 20 lb gas cylinder without any adapter.
Propane tips are somewhat different than acetylene tips.
I did modify a #2 Victor welding tip by counterboring slightly and it seems to work.
For complete info:
http://www.smithequipment.com/alt_fuel_faq.html
Brass_Machine:
This is pretty cool. Only was able to skim the videos, but I will watch them again soon.
Eric
pebbleworm:
Very neat! Demolition torches run on propane, so why not anything else? I keep mumbling about converting a torch to run on propane and compressed air, sort of like a jewelers or laboratory blow pipe. I live in a city apartment and might need a torch for one project a year so I don't really want to curate oxygen and acetylene cylinders.
vtsteam:
pebbleworm, I am thinking about making an air and propane torch for brazing, too. More for reasons of economy and convenience. So happens I'm running out of oxygen this weekend, and the place where I get cylinders filled won't open until Monday.
For brazing straight propane seems very do-able to me, and in fact, without the need for compressed air, though that might be interesting, as well. But I like to simplify things, if possible.
Seems to me a mod of some of the atmospheric forge burner designs would work for brazing. Might mess with that this weekend.
modeng200023:
There is a torch design called the Drax Torch that is according to the literature, able to cut steel using just propane and air.
Here is a link to the literature http://www.geodyssey3.u-net.com/ that might be worth reading.
As I understand it,the design has not been marketed (I wonder why, perhaps it was bought up to stop competition?) but it looks to be quite an advance in torch technology. I also think there is a British patent for this idea.
Hope this is on topic.
John
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