I used a couple or neodymium magnets this morning to hold a piece of work together (my BIL's replacement knee was giving trouble...ark ark) and those little suckers are amazing. These are 3/4" by maybe 1/2". I had 3 and used to have 4 but cracked one
For a start I can't get them araprt without a screwdriver between them. Then I used them to hold my work. I welded the weldment that was not near the magnets, then tried to tack the other end. The weld simply went everywhere. I managed to tack., but until I sussed what was happening, I wondered what the heck I was doing wrong.
I have also given myself a blood blister with them.
If anyone has any ideas about wrapping them in plastic bags to pick stuff up, beware. Use a couple of layers of cloth as well! They tear plastic bags. DAMHIKT