about to build my first CNC machine

[Clive S]

thanks Clive , yeah, not buying electronics just yet, i do want to order screws, rails and blocks as soon as i can, would like them here before i start build slightly, unsure on pulley requirement re screw length. i am thinking would be better "FOR ME" with my nursery status in cnc , to actually build , then using a spring scale AND torque wrench(if i knew what size wrench) i could see what is required to turn ballscrews and move gantry

Well I would still get the designed done first as it could save you a lot of dosh if you buy the wrong bits.

nema 23 motors are the norm for this size of machine (low inductance) and 1610 screws x and y 1605 for z