I just tried Jim's dremel foam popper heads for the first time tonight and its amazing how quickly they shape up. About 15 seconds per head. I did make one slight adjustment. I used the upholstery needle but I put it in my 2 speed dremel minimite. It has a large square battery pack and all I have to do is hold it onto my work surface and use an emory board in the other hand. So far so good! Thanks Jim!!!!!!!!!