Absolutely the hardest part was the shrinking. Most of the damage, I had access to both sides of the panel. Which means you can use a hammer and a block thing called a dolly. But you have to hold the dolly on one side and hammer on the other. Which is awkward as hell. It's slow work, or was for me; I suppose a pro can go faster. And you have to be careful because if you overdo it, you can end up hardening the metal and end up with cracks.
All the videos and tutorials say to practice on some scrap sheet metal, but I didn't have any, so it was trial by fire.
This was back in the summer, but my left shoulder is still being pissy about the positions I was in to reach the dolly to the middle of the roof and still see what I was hitting with the hammer.
Tbh though, it was much simpler than I thought. There's plenty of good tutorials out there,and the concepts aren't complicated at all, it's the skill that's fiddly and detailed.
It's the origins of it.
When it started being used, it was used derogatorily, so the connotation stuck despite it not being inherently racist to shorten a word.
Tbh, it doesn't have to be a slur still. But it is still used by racists as a slur because of the origins, so it would take a cohesive effort to reclaim and reframe it.