Needed for my build

[jpcnc]

My y axis is only going to be used to wind out by hand to a position then locked off, ballscrew is overkill really but I want the anti backlash etc
If im only needing 1000mm/min with a 5mm pitch then its only gona be turning at 200rpm wich I think will be fine

[Jonathan]

My y axis is only going to be used to wind out by hand to a position then locked off, ballscrew is overkill really but I want the anti backlash etc
If im only needing 1000mm/min with a 5mm pitch then its only gona be turning at 200rpm wich I think will be fine

Yes I'm sure 200rpm will be fine, so long as your happy waiting 2 minutes to traverse the whole bed.
Surely if you're operating the Y axis by hand then you can compensate for the backlash by hand, as one would normally when using a manual machine? I suppose not having backlash helps get a good finish as you can use climb milling...not sure if that's an issue cutting rubber.

You might want to consider the drive mechanish I used on my Y axis - very very cheap, and very little if any backlash.

http://www.mycncuk.com/forums/showth...ll=1#post16365

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