Dr. Dean, already accomplished!
I did this just minutes after welding the pop can. Beat you to the punch lol. Just to let you know, this wasn't very hard. I thought it was easier than the pop can I assure you. I think that the trick is supposed to be weld them at the edge, but NOT MELT THROUGH. My teacher told me to do this, and I'll admit, DEFFINATLY not easy. I tried this one more time, but failed to not melt through. I would've kept trying, but had to get work done in the lab. But I will keep trying!!!