mx023 wrote:is there a factory warranty with these buckyballs? i got some from woot, and the metallic layer has come off and now the metallic dust gets all over my hands..
I did quite a bit of research before buying any of these, I ended up getting nanospheres. They are a little smaller physically, but you get 231 per set instead of 216, for about the same price. (you CANNOT mix sets of different sizes) That was a year ago, and they were $18-20/set. China's rare earth embargo has started to put the squeeze on magnet prices though, the last two sets I bought were $27 ea and I imagine the prices will only continue their rapid rise.
Unfortunately anything besides the basic nickel plated balls are going to flake off their coating, there's just too much force between the balls for any softer coating to withstand. This happens with the black, high luster silver, and gold balls as well.
I assure you the magnetic dust isn't getting on your hands - it's firmly on the balls and you'll have a tough time cleaning it off them. The dust is the non-metallic part of the colored coating that's being ground to powder.