I just bought a motorized Singer 206 with loose wires the other day. I haven't had time to tinker with it. I'll have to see if mine is iron or aluminum. It is waiting for me at the shop. Mine came with a ton of attachments and sewing stuff. You all answered some of my questions. Mine was bought in 1952. Everything moves very well. The cabinet door with the hole is a real nice thing to have with those machines. The slide plate is tough to operate - you have to raise the feed dog end to slide it out of the way. On the other hand it seems like it would get cleaned more often if you saw the lint on bobbin change occasions.