On Fri, May 24, 2013 at 11:36:11AM -0500, Jon Elson wrote:

> Great, this has come up several times in the past, and I really didn't 
> have a way
> to test anything short of building a mockup.  I could bring a few extra 
> pieces
> of hardware too, if that helps.

My mockup is nice, and is good and complete except I haven't shelled
out the bucks to get my own 7i30/5i20 to use on it permanently (it
was built with that driver board in mind.)  Last time I borrowed
jepler's off his small mill.

It has two adjacent moving delrin blocks on acme screws and drill
rod, with home switches mounted in slots for adjustment, and
encoders with index on the motors.  It also has two dial indicators
at the business end so you can see the exact alignment.  It would be
trivial to cut slots for spaghetti and I think that's a great idea.

If I/we can't get slaved joints working at fest, I would be pretty
tempted to send it home with anyone who was interested in working on
it.

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