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

Forget tapping the nut yourself. Just order a saddle nut and cut off the
arm. It has plenty of stock to work with. I am sure you can buy a few
nuts for the price of the tap even if you can find one.

Tim
[Denver, CO]
Beat the Sherline Oct 1 price increase. Order Now!
New Sherline Prices at http://www.ktmarketing.com/SherlineIncrease.htm

Sherline & Taig products at Deep Discount
Mach1 & DeskCNC with credit card ordering
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> -----Original Message-----
>>
> Ballendo,
> There is one big fly in the soup! The leadscrew is 3/8-20
> **LH**. There are no taps available off the shelf that I can
> find. I've checked all the usual suspects. RichD
>
> ballendo wrote:
> >
> Snip>>>
> >
> > P.S. If you've got the old, non- lockable style z axis nut: The
> > sherline thread is 3/8-20, a common thread. Making a decent
> nut seems
> > a whole lot less work, IMO. You may even be able to add your own
> > version of a "starwheel", like Sherline uses on the xand y...
> >
> > Here's how: Start with a brass nut threaded for the leadscrew. Turn
> > its OD to fit, and mill or file grooves for the "star"
> shape. tap a 4-
> > 40 or so hole in the flat back of the existing nut. Using a
> piece of
> > springy sheet, or music wire held by a 4-40 screw in this
> hole, bend
> > til it engages the grooves in your star nut, which is screwed into
> > position above the existing nut (like the new style locking lever).
> > Viola, A/b nut.