Hi there I've just gotten myself an old unimat selecta mini-lathe, with the standard 3 jaw chuck installed. I seem to be having quite a bit of trouble 1. getting things centred and 2. getting the jaws to hold my part properly. With soft aluminium of course, the non-centred thing isn't so much of an issue as I just start bigger and work my way down in size, however when it comes to machining steel I can't for the life of me take virtually any cuts without the part catching the binding up the motor, and then coming out of the chuck jaws. I must note I've changed the motor from the standard 70-watt one over to a 150-watt electric scooter motor. Is it possible to do something to my chuck to make it centre parts better and be able to hold on to them easier or is it a case of getting a new chuck. 4 Jaw perhaps? I am using some cheap carbide lathe tools off eBay if that helps at all (I've ordered some indexable carbide tools with the tcmt tip on to replace these in the hope this helps me out a bit)
Any help is greatly appreciated as this is a whole new world to me and I'm trying to learn as I go.?
Thanks Dan?
