3piece
New member
I've learned an enormous amount from this group. I don't usually post much in return because I'm not as expert. However, had to determine the polarity of an A4 today that I was putting in my PRS and didn't have a reference - no compass or marked magnet. So I figured I could make a compass - and it worked. Here is the dorky vid I made for my daughter. Maybe it will help someone. Thx. https://www.youtube.com/watch?v=WmISggLobGU&spfreload=10
