Oxy-Fuel Welding--Generally Acetylene; But MAPPS Gas; Hydrogen (For Aluminum); sometimes Propane--Generally for Soldering or Home Heat Treatment.....

And in the Modern World--God knows what other gases may have been tried...

.....RVM45

Is there any certification test anymore for OFW? I mostly Weld small Gun parts and small metal sculptures..... And I certainly don't need certification for that..... Nonetheless, I love OFW Welding (more like an OFW fanatic); But I'd be willing to go considerably out of my way to take a Certificatio...