Let the fun begin !!! ???

[PAULRO]

originally i designed around 16 mm x 10 mm ballscrews for X (1440 long) and y ( 1395 long) and 16mm x 5mm for z . i know from reading your previous posts that the length is critical or rather going over a certain length will almost certainly introduce whip at high speeds. i would like at some stage to tackle a Mayan calender and so i'm curious about resolution if i go with a 20 mm pitch. I'm not sure also about the amount of clearance i should leave between ballnut and bearing blocks either end. is there a standard clearance that i should factor in ? i have left 15mm either end but i'm not sure if this is enough.



i could also use nema 23 4Nm motors instead of 3Nm. (courtesy of Eddycurrent ) would the same psu ,motor drivers , smooth stepper, break out board etc. do for both? just trying to get a handle on the cost of everything required is a job in inself!!!!