Rick
I didn't make the nut. It is off my router. I didn't measure it but it looks to be just under 1/2". It may well be a metric size.
You're assumptions on how it works are correct. The threaded rod is a slightly loose fit in the round piece. That holds the rod while the spring pushes the threaded piece against it.
Gross adjustments are made by pressing on the plunger and fine adjustments by turning the nut.
Both pieces appear to be die cast.
As I mentioned in a previous post I want something like this for my drill press stop. It would have to be a bit smaller and would be difficult to sand cast. For a one-off a braze up might be the best approach. As an engineer though, I'll probably spend years trying to think of a easier way.
JohnW
--- In gingery_machines@yahoogroups.com, Rick Sparber <rgsparber@...> wrote:
>
> John,
>
> I saw the nut you made in the photo section of the group site - very elegant! I don't have a sense of its size but it seems to fit something like a 1/2-13.
>
> It also looks like only the movable part has threads and the body just applies the opposing force to keep the threaded rod engaged. Is that right?
>
> How did you make the rounded outer surface?
>
> Rick
> Rick.Sparber.org
>
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