Review on 🔧 Strong Hand Tools Magnetic V-Pads Kit | Dual-Face & Bottom Magnets | 4 Piece Set (XDV4: 2x 2", 12 lbs Pull Force) (XFV4: 2x 2.2", 18 lbs Pull Force), MVDF44 by Vincent Hurst

I was very happy to get them and set up various configurations successfully, but sometimes my stack fell apart and I didn't know why. I eventually realized that the magnet on one of the terminals wasn't a magnet, or if it ever was, it was completely de-energized, for lack of a better term. So one of the 4 terminals is defective. EDIT: Turns out it's my fault. I didn't know that the magnet loses its magnetic ability when the clamp is heated. Don't forget to remove the clips after you're done pinning the pieces. Lesson learned!