Hi guys, I’ve recently purchased a Rtech 161 ac/dc tig welder, I’ve been welding with mig for years and have no problem welding mild steel with the tig but I can’t get any sort of weld on aluminium, the material I’m trying to weld is 1.5mm 1050 H14 grade plate(brand new),I’m set at AC using 80amps,I’ve tried the balance from one end of the scale to the other the same with frequency but I can’t get a pool to form at all and eventually it just blows a hole through the work piece, I’m using 100% Argon(disposable bottles)and I’m at my wits end having tried everything I’ve read/know, I’m beginning to think the machine is faulty, any help would be much appreciated guys ... Thanks