Don't know enough about metal work, but I was thinking he was reforging them, not just reshaping.
Instead, I've been trying to figure out how his dinky forge could generate any heat though. Really open air, little fuel, hand powered bellow for some reason (so open, most flames would extinguish from the natural wind), all on a small table.
Maybe he was using magicules as a replacement for JB Weld or something. \shrug
Open forges are a thing, and can work quite well- you can even melt aluminum in one, provided that you have it set up correctly and burn a lot of fuel to do so. The key there is that it has to be in a bit of a pit, basically; the wind can't just blow directly across the fire, and the bellows' tuyere needs to be pointed down to the base of the fuel to give it more oxygen. This setup fails on both points. The fuel is also lit
directly on the table surface instead of on a heat-resistant surface like fire brick.
The hand-powered bellow is really bad though, either way, and should seriously be a foot pedal instead, as well as having a few assistants with him to do menial tasks (like refilling fuel or pedalling the bellows, which was a job that fully consumed a single person's labour).
As has already been discussed above, magicules can't JB Weld, lol.
EDIT:I think I found the picture/video that the author/assistant half-assed as the travel forge here, lol. From
this YT video about building a Large Brake Drum Forge.