Hi,
I'm taking welding classes and we are doing Oxy-A at the moment, but am having great problems getting nice root penetration on simple butt welds at the same time as adequate reinforcement of the weld face.
With a No3 nozzle (3 cu foot acetylene per hour), neutral flame, I'm using
2mm plate, spacing to about 2.5mm and using a leftwards technique. If I let the 'onion' form then move off filling the puddle before I know it I've blown a hole. If I feed fast enough to avoid blowing holes I end up with insufficient root penetration and/or inadequate re-inforcement.Any tips or advice would be appreciated whilst I go off and get my cylinders refilled and try and find some more 2mm offcuts :(
Andrew Mawson Bromley, Kent, UK