RE: [CAD_CAM_EDM_DRO] Sherline Z-axis ballscrew feed.

Hi, Rich, Dan:

Please keep the rest of us informed on your research. It'd be really nice to
put some ballscrews on the Sherlines.

-- Jerry

> Dan,
> I have been pondering the same thing as the Z axis slop is seriously
> screwing up my engraving. There is a routine that lifts the tool at sharp
> internal corners at the V tip angle to give the same radius as the tip
> at the surface. With backlash all you get is a gouge. Ugly!
> Replacing the stock nuts and leadscrews gets old fast.
>
> I have contacted Jena-Tec, <www.jena-tec.com>, 888-453-6283 about their
> miniature ball screw assembly p/n JTm3-08020 (300mm length, 2mm
> lead, 8mm dia,
> nut diameter 16.5mm/0.650"). I believe this could be shoe horned
> in without
> too much trouble. At least it's long enough to fit. Most others
> are too short.
> I was told a price of $156.00 each, and the sales guy offered a
> loaner sample.
> To date I have no sample and have not pursued it any further, but want to.
> Would you do me/us a favor and try your end. It looks really good.
> Also, I'm not sure this is a single start thread leadscrew.
> I did not ask the quantity discount.
> BTW, since my initial contact they have more choices now,
> SMALLER!. Maybe the
> X and Y can be done as well??
> RichD
>