Circuit Board Clamp

There are numerous PCB clamps on the market, but most are quite expensive and usually made out of aluminium. This set of magnetic clamps allows most circuit boards to be held for soldering etc. without damage using a single magnet.

Parts used:
12mm x 2mm Neodymium Disk Magnets Sources:eBay Aliexpress etc.
3mm bolt 25mm hex or cheesehead.
Any magnetic steel flat sheet. (Rounded edges are safer)