I'm in the early stages of converting a TM45 (RF45 clone) to CNC. I have read many threads on this but cant quite decide if I should purchase quality used ground ball screws or new Chinese rolled and double nut. Both are close price wise and I'm leaning towards the Chinese with double nuts. As this should give me close to zero backlash? Id appreciate some opinions or if I'm overlooking anything.
Cheers.