I was dismantling a razor this afternoon to put the blade in a new set of scales. The pivot pin in the old scales was sitting up very proud so I grabbed the Dremel to cut the head of it off and then punch the remainder out. I'm not sure what type of plastic the scales were but as the Dremel heated up the head of the pin the scales started to emit plumes of dark smoke. I was stunned for a few seconds and that was enough time for the room to fill up with smoke. I made a bolt for the bathroom which resulted in both the hallway and bathroom also being full of thick smoke. I've never seen anything like it. Running the scales under cold watch stopped the smoke and the burnt part of the scales just disintegrated into dust.