Re: lead-screw vs common threaded rod

Chris, et al:

And that is the real trick!!

If you start with inexpensive marginal components you run the risk of having
to replace them later. A real pain if you've put in many hours machining or
otherwise modifying them. "Man, I should have started with better stuff."

But, if you buy good stuff to start with, there is a reasonable chance the
machine won't work right off and that "good stuff" will have to be replaced.
Now that's an expensive pain in the .... "Why did I start with this
expensive stuff when I should have done a proof of concept out of cardboard?"

If you can solve this one you're better than I. I think the best we can do,
as I think Ballendo stresses, is to consider the trade offs and understand
the accuracies we're trying to achieve. I try but still make some scrap.

Ahh, so many chance to have profound learning experiences. :-)

On Tuesday 22 January 2002 09:58 pm, Chris wrote:
>
> If you are going to go thru the all work of turning the ends down, securely
> fitting them to a good set of double row angular contact bearings, you may
> as well put something in place that is better than your typical acme with a
> sloppy nut or a nut that you will need to attend to occasionally.

--
Hugh Currin
Klamath Falls, OR