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

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.

--
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You need only two tools: WD-40 & Duct Tape. If it doesn't move and
should, use WD-40. If it moves and shouldn't, use the duct tape.