did you do the weld?
Looks good.
Yes, I am a career welder.
Also look up low hydrogen welding.Thing is,without that,you will tend to get cracks.
These tanks are mild steel and wire welded. Common 70 series wire is very good and similar to lo hy. There are several flavors of each but most wouldn't matter to single pass on light plate like this.
Look how millions of these are made, you can see many had welding nothing to write home about right from the start and have all the attachments, mounting plates, feet that are simply welded to the skin of the tank, not much special about them. Lots of them get cracks usually at the start of these welds, very common.
Happens on the feet if they are bolted down and not rare on the motor mounting either, got nothing to do with rust and most cracks are short and come from vibration, usually start with a little lack of fusion or cold lap at the beginning of the weld.
This isn't an endorsement for a repair,,,,,,,,,, its simply something that happens to them. But that thing got a little crack and someone that obviously want qualified, either by skill and certainly not on paper tried to repair it. Now it would need a patch to make it safe again, no one can tell whats what, where it started, how many holes the guy tried to fill and obviously it leaks again, none of which are good.
I have one at home I welded up a slow leak by the foot. It would still slowly leak out after being under pressure a few days.
Obviously not welded completely, they should never leak. But,,,, the risk of explosion is rather minor in the grand scheme of things. I know someone can find a pic on the internet of it happening that has been passed around millions of times but the risk of injury is way higher driving to the store for a replacement than of it blowing up. We can wait for the screaming to start from that statement but it is numerically accurate.
