Milling Machine Advice

**njhussey** · 13-06-2014

This in the inside of the front of my mill, was thinking of opening the hole where the indicator goes through the bottom, rap it for a 1605 screwed ballnut and use a 1605 ballscrew with custom bearing ends.

**njhussey** · 13-06-2014

Would two singles screwed into each side of the plate/bracket be ok?

**Washout** · 13-06-2014

Hi Jonathan
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Can you explain in short words for an old duffer like me how a double nut works?
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My guess is that there are "tensioned" in opposite directions against each other and therefore cancel out any play no matter which direction of rotation is used (can't quite visualise how though).
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Cheers
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.
Chris

**Jonathan** · 14-06-2014

Originally Posted by Washout

My guess is that there are "tensioned" in opposite directions against each other and therefore cancel out any play no matter which direction of rotation is used (can't quite visualise how though).

Near enough. I recommend reading Robin's build log as he dismantled some, so you can easily see how it works ... or can be improved with springs (which I've now copied on 3 machines but with separate nuts).