Re: [CAD_CAM_EDM_DRO] Leadscrews, PCB router experiment

Alan Marconett KM6VV wrote:

> Hi Jon,
>
> Now that you mention it, these are SQUARE threads, not a rounded bottom
> to be seen, so I guess it's just a minimal backlash nut.
>
> I agree, the stacked axis wasn't too good, after I got it built. That's
> why I'm looking for plans, to get an idea what it SHOULD look like.
> I'll probably just reuse the shafts, bearings and lead screws.
>
> The 8" granite sounds great, but I don't think I can carry it up the
> stairs!

We couldn't move it with a FORKLIFT! It just groaned. I did get one of the
beams, which should make a nice straightedge, or test surface for an
iron straightedge. I've been able to do some nice PC board drilling with the
air bearing spindle from the Excellon machine mounted to the side of my
Bridgeport quill. The axis drives and precision ballscrews are in my
Bridgeport X and Y axes. I had to make up a new Z axis drive.

Jon