Hello everyone,
I've just found this site; I'm really impressed. Anyhow, I'm about to begin construction on my third mill. I thought you might be interested in a few pictures from my second. As you can see it's mostly made out of lego bricks. The only thing not made out of legos are the dremel and the three stepper motors. The steppers are computer controlled via a motor controller I built.
I'm pricing parts for version three now. I already have the new stepper motors. These are NEMA 23, the lego mill used NEMA 17s. At 3 amps per phase, I'll have to build a new motor controller and get a new power supply. I have the parts for that picked out, too. I plan on getting a surplus graphic LCD display for a digital read out. Suppose it doesn't matter, since I don't have (read can't afford) encoders I won't be able to operate it by hand, but seems like a nice feature...
Anyhow, I'll let you know how it goes when it gets going.