kd0afk
Well-Known Member
- Joined
- Nov 5, 2012
- Messages
- 558
- Reaction score
- 52
But not aluminum. Is there an acid that will eat steel and not touch aluminum? I had an idea to fill a box with ball bearing and then aluminum. When the aluminum cools, dissolve away all the balls and be left with a very cool structure. Is there an acid that will eat steel but not aluminum?