I'm going to start building a JGRO shortly and have been reading threads here for weeks. One thing I still haven't been able to decide on is which leadscrew makes the most sense.
I've been leaning towards 1/2"-10 ACME 2 start for all 3 axes. This looks like a good compromise between accuracy and speed. If I understand this correctly, a higher start (e.g. 5 start) would be faster, but has the potential to be less accurate? Would there indeed be a downside to going with a faster screw (e.g. 1/2"-10 5 start or 1/2"-8 2 or 4 start)?
Thanks for any advice from those with experience in this!