Let the fun begin !!! ???

[PAULRO]

I could go with a heavier extrusion if that would aid the machining of plastics and aluminum (light gauge) from time to time. i have a choice of extrusion for the gantry ( length 1610 mm ) either 100 x 50 , 4.18 kg/m, 120 x 40 , 4.35 kg /m or 120 x 40 , 6.8 kg /m. i don't know if that would make for a better or worse situation.



the images above show the gantry attached. i have yet to spec motors so haven't any motors mounts designed. i'm currently getting through Irvings tutorial on motor specs. what a great read!! i'm hoping nema 23s 3nm will do the job , by the way if i do go with these motors should i go for the heaviest i can get? any thoughts on this and the gantry extrusion choice would be appreciated.