HOW TO WELD CANS,
I've had a few people ask so here ya go
Get some cans of the same brand (different brands have different radius bases) I drilled a hole (don't matter what size) in the bottom of the cans, rinsed with boiling water, blew out with compressed air until dry. (Don't have to clean the inside but it STINKS if you don't) also the reason for putting holes in the bases is to stop that pocket of air getting hot, expanding and blowing the weld out
Scotch-brite is your best friend.. scotch-brite the fuck out of the bottoms of the cans.. in one of the photos above 👆👉 (scroll) you can see I've already hit them with it and there is still a line on the base, don't know what it is, thought it wouldn't matter.. it does.. it will contaminate the weld and it will go to shit fast, so get it all off, them hit it with acetone
I used 2% Lanth tungsten 3/32 (2.4mm) ground the tip to a sharp point but then on that point I made a smaller point with a less sharp angle, like a point on a point did this because with a sharp pointed tip the arc plume was to wide and wouldn't focus heat in the join between the cans. I tried earlier with 1mm/ .30" #tungsten and didn't have as much luck as a 3/32 🤷♂️ once tapered, chuck in a drill and buff to a shiney smooth finish to help stabilise arc at low amperage.
Clamp the cans together with a 123 block or some heavy piece of metal at each end for the cans to earth.
1/16 #5356 filler rod, 20 amps peak current (make sure your machine can actually get lower than 20 amps my inverter is 20amp minimum on AC so I used my old transformer), 60% ac balance I used a gas lens and no 7 cup, I have a no 4 but I broke it with the pliers 🤦♂️ 100% #argon
Initiate the arc using just enough amperage to stabilise the arc. As soon as the arc is stable get a dab of filler in there and back off, tack the opposite side (keep fitup tight) also I wiped the filler rod down aswell
I started to weld 90 degrees from my tacks and went all the way around the cans in one direction in about 3-4 welds (unless you have a positioner.. I wish) restart where you tapered off and get moving quickly keeping as tiny of an arc as you can. 🤙