On 20 July 2012 23:18, Jeshua Lacock <jes...@3dtopo.com> wrote:

> I am sure with a 10-foot span that the horizontal ballscrews will sag a 
> little from gravity. Is this much of a concern? Does anyone know of a trick 
> to put some kind of support in the middle of the span? I can't think of any 
> practical way.

I can think of impractical ways. For example, something rather like a
gear with ballscrew-sized tooth-gaps that the balls crews can pass
through.

However, typically the screw won't be able to sag, as it will be held
up by the ballnut.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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