So i was wondering if anyone has any insight on the concept of making your moving gantry CNC predominately out of epoxy granite filled steel bar?
From everything i've read I'm under the assumption that heavy and rigid = precision. even in moving parts. is this the case?
As far as bearings go, I'm under the impression that fully supported guide rails are the way to go. Would i receive a measurable benefit from having over my guide rails being over 20mm smaller machine approx 800x500mm?
Also, would I receive a measurable benefit from doubling up on rails on my largest axis? (dont get hung up on that particular design, just the double rail on each side)
Where can i afford to be a little bit cheap to start with? Can i buy cheaper chinese stepper motors as long as i get a something like a gecko G540 controller?
Leadscrews. What diameter should i look for to be on the right safe side? is 12mm a decent size or should I go larger?
Thanks heaps for all the info I've already gathered from you guys on this forum and for any I may receive now!