Just wanted to share a problem I had with my Rohr 250 3 in 1 Mig and Stick welder.
I’ve had this mig and was forced to use fluxed wire welding as I couldn’t get the gas to come through, I wasn’t happy with the quality of my welds so I decided to invest in a 10Ltr bottle of argon and a gauge, I was gutted when I connected it up that the gas wasn’t coming through still so I eventually stripped the machine down to trace it through, I expected to find the solenoid that opens to let the gas through to be at fault or a blockage in the line somewhere , however the solenoid was working as it should and there were no blockages in the line, I ascertained that beyond the solenoid it was purely a physical process of the gas being able to get through so I dismantled the gun and took the liner out, eventually I discovered that the fault was in the brass chamber/coupling on the welder side of the gun, it hadn’t had a hole drilled in it during manufacture to let the gas in to the gun liner casing to allow the gas to get to the nozzle, it was a tricky job drilling a hole deep enough in to the wall of the brass coupling so as to be beyond where the the gun liner threads to let the gas through but it thankfully worked a treat and I was rewarded with some lovely clean welds as a result
I’ve had this mig and was forced to use fluxed wire welding as I couldn’t get the gas to come through, I wasn’t happy with the quality of my welds so I decided to invest in a 10Ltr bottle of argon and a gauge, I was gutted when I connected it up that the gas wasn’t coming through still so I eventually stripped the machine down to trace it through, I expected to find the solenoid that opens to let the gas through to be at fault or a blockage in the line somewhere , however the solenoid was working as it should and there were no blockages in the line, I ascertained that beyond the solenoid it was purely a physical process of the gas being able to get through so I dismantled the gun and took the liner out, eventually I discovered that the fault was in the brass chamber/coupling on the welder side of the gun, it hadn’t had a hole drilled in it during manufacture to let the gas in to the gun liner casing to allow the gas to get to the nozzle, it was a tricky job drilling a hole deep enough in to the wall of the brass coupling so as to be beyond where the the gun liner threads to let the gas through but it thankfully worked a treat and I was rewarded with some lovely clean welds as a result