I previously was sharing equipment and now that i am buying all of my own, I am having trouble finding a hot and cold hammer that will work with what ive got. The only ones I seem to find are ones that plug into a microderm machine ( mine does not have that option)  or a machine that i dont need. I Just need a simple Hot/Cold Hammer that will plug into the wall outlet... or if anyone has any other ideas. Does anyone use a hot/cold hammer and know where to get one from that is worth buying?