Re: New ballscrews?
Any ball screw of hobby size made in China will be a rolled screw, and I'm very doubtful that with a single ball nut, the backlash could be anywhere near 6 tenths. Any screw with double nuts can be adjusted to almost zero backlash, cheap rolled screws or others. All this is predicated on the fact that the fixed end of the screw is firmly held in some bearing arrangement that also allows zero backlash. This has been my experience anyway.
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