Sorry to hear about that. I will try to learn from your "event" and prepare for the inevitable tool drop when I get to that stage.
Did you consider alternative repair methods? For example, using the trim bundle to create a repair panel at that location may have been cheaper. And the weight impact would be small. If I get in that situation, I am pretty sure I will CONSIDER putting a doubler there with new skin on top. In addition to the $200 cost of skin replacement, you have all the labor associated with removing rivets and re-reviting the skin, right? Compare that to installing a doubler? Just curious.
I haven't built a thing yet, but every aircraft I know of has structural repairs that aren't to print, and I would expect that I will have to do some of that sort of thing to remain sane. Starting over every time I make a mistake is going to challenge my sanity.