Been looking at printer designs for a while now. I keep noticing many seem to leave the lead screws unsupported at the opposite end to the motor.
What is the reasoning behind this? I've read this is because many arent straight, but would it not be better to have a small machined end sat in a bearing? Like a ball screw.
Which leads me to ask, is cost the only reason we don't see ball screws used more often in printer builds? If they were to be used, would it be better for these to be supported with the BK/BF type bearing mounts or would this be considered "over constrained"?
With a 3 screw/motor design, assuming we want to use linear rails, how many rails would be best for a larger bed? 500mm+. 3, one per screw, or with the one sided screw would spacing 2 be better? Is either configuration more susceptible to binding? Could buying a "linear stage" for each screw make alignment a bit easier?
Something like this, but longer:
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www.ebay.co.uk]
E3d are using a cantilever setup for the tool changer unit, does anyone have any experience with this? Does it wobble?
Edited 2 time(s). Last edit at 12/29/2019 11:21AM by mission.