I have a 1/2 inch drill that is all aluminum and old. It does not stall, it just spins you around if you have a tight grip on it. I used the heck out of it drilling the 2 inch holes in the top of the wall headers when I put in my central vacuum system. I can tell you that standing on rafters in the HOT attic drilling a hole with a drill that does not stop is not fun. If you hit the little button that locks it ON you are gonna hate it if it hits a tough spot in the wood. It just keeps spinning until the plug is pulled out of the wall.
I got the newer 5 blade ceiling fan in place where the old 4 four blade fan was. Now I need to get the the old fan into the new spot.
It was HOT here today. We hit 94 today. I think spring was on Thursday, now it is summer.