those little portable o/a set ups show up on marketplace/kijiji pretty often if thats what you wanted to do
brazing with oxy/propane is kinda tricky IMO, at least with o/a you can use a welding tip, more controllable
I cant seem to get a good enough flame with oxy-propane and a welding tip to braze with, always end up using the cutting tip, if someone know's if there is something close to a o/a welding tip for o/p brazing im all ears
For oxy propane you need to size up a bit on the tip size. Helps to get a propane/natural gas specific tip too, I think they have a little counter bore that helps keep the flame attached.
I typical use #2-4 and mostly a #3. Also have a rosebud.
Will the O2 concentrator support your Victor torch or only the little smith copy torch?
Does the O2 concentrator also create water? just curious.
I use pretty much the same size tips with the Victor as I did with the uniweld so the concentrator worked with both just fine. The regulator on the concentrator is in lpm I think, and goes up to 5. I only have had to max it out on the rosebud. Normally I had it set around 3lpm. The thing even has a standard B fitting on it. I think it has a little colllector tray for water like a de-humidifier. Never seemed to fill up with my use, I’m sure in its intended use of running nearly 24/7 it would collect more water.
I got tired of how finicky it was to get going. It doesn’t really store any o2 under pressure, there’s an accumulator bladder in there that smooths out the output. If there’s no flow for like 10 seconds or more it starts beeping at you and I believe it will turn itself off. So the procedure is to turn it on with the o2 valve on the torch open and leave it be for 5 minutes or so to get accumulator to build some pressure. Then you very quickly shut the O2 valve, crack the fuel valve, light the torch, and open the o2 valve again. If you don’t do it fast enough the O2 line builds back pressure and when you crack the valve it blows out your flame. Tricky to get it right every time. 4 years ago when I bought a tig welder and no longer could escape going to a gas supplier I gave in and leased an o2 tank and regulator.