This week’s video is about tig welding 7 aluminum parts.
I was busy building a plasma cutting table when these parts were brought to me. 7 assemblies made from one inch aluminum round stock and one inch bar stock.
These 7 parts seem to be some type of fancy pry bar that will be used to pry expensive parts to disassemble a precision machine.
That is why I reckon the parts are made out of aluminum and why they have a strip of nylon fastened along the thick member.
Anyway, the main thing is that they are straight… and that I don’t melt off the .120″ thick lip on the smallest part.
Using a 250f preheat along with the Miller Dynasty 2000DX set at 100-15 hz helped.
I should have cleaned these parts better.
I should have dipped them in degreaser, wiped them down, wire brushed them, and baked them.
But I didn’t.
They interupted another job and I just wanted to get them done so I just gave them a quick wipe withe acetone… it wasn’t quite enough.
I met a guy down in Florida at Sun ‘n Fun who says Easy Off oven cleaner works good for an aluminum cleaner.
Next time, I will try it and let you know how it works for cleaning aluminum prior to welding.