Have Him redo a set is best imo.
Mig is perfectly fine. He should always clean the milscale (common untrained welders error) but for this application no doing it wont kill the weld. Since he will this time- great.
Most of his welds were ok, just parts of the ones I saw is what bothered me. I believe with him taking a moment to do a good job, the ones you end up with will be great.
And he is right that seeing “dimes” doesn’t always means it a perfect weld, and the tig vs mig thing.
My concearn was not all his welds innthe pics you posted were up to snuff. For a guy doing it at home, where if one cracks in a few years and he has to fix a spot on his own work- then ok. But when charging someone for a structured component, they should all be professional quality, not just 80% of them.
Good professional welds in the bottom:
Not professional welds on top:
Below are no good at all and any farmer or alley way dude should grind out and redo what is below:
His fitment is not square, which you easily noticed, and is also lacking tapering the leading edge for the penetration he is running, so he should either be welding at a higher heat and walking his lead from one piece to the next- back and forth or if running flat like he is and at the colder temp, he should grind 45* into the end plate and be concentrating more heat onto the flat plate and drawing the end plate into it.
It is easy for any certified welder to see his penetration is lacking and those above are why, along with not removing the scale- 15* of the heat is lost to the scale, along with the porosity that is visible in it.
I understand he is trying to do things quicker for ease of labor and to keep the cost doen for the end consumer-which is perfectly fine. I just get the feeling he needs to up his game on the quality control checks here. Any product at any time should be able to be pulled out of a box and used for pictures to demonstrate the quality coming from a shop as the advertising example- and if he is honest with himself, he would not choose those last 2 pics and the one showing out of square as his advertising units.
But everyone goofs a little, and I think that is all that happened here. By what I see I think he is capable of making perfectly fine mounts, and a second chance will fix it.
