Trying some overlaps on thin aluminum 1.5mm. I don´t know why but seems to be much more difficult then a butt joint using the same thickness. Probably the weld is good but it is VERY ugly. What i´m doing wrong?
the sheets need to be clamped as so the edge does not lift or warp.
use a backer and tack often.
if the edge lifts heat gets under the edge and melts it away.
hope this help some
craig
htp invertig 221
syncrowave 250
miller 140 mig
hypertherm plasma
morse 14 metal devil
No clamps was used. And just a few tacks 3 or 4 in a 35 cm extension. Next time I´ll double the tacks and buy some long clamps. You are sure a did a lot of deviations to refill the burned edges.
No too bad, just need more time to maintain consistent speed.
When welding long flat surfaces I use a small piece of fire blanket that I fold to about 4 layers. Rest your palm at it and you won't get burned and it helps you slide along easier.