Any idea how they get the lead screws so much straighter? Is it the manufacturing process, better tolerances/ quality control? Or is it that the trapizoidal screws are just that cheap?
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I have a related question...Say you had 3 linear steppers (screws) supporting a print platform up in the air. (with a somewhat-compliant linkage)Assuming the platform is flat and stiff and the steppers are individually controllable; You get real bed leveling and no large cantilever forces.But of course, the screws are not straight, and the platform is not adequately constrained against XY movement or Z-axis rotation.Is there something that would remove those three degrees of freedom without over-constraint?
On Mon, 13 Jan 2020 at 08:38, Steven Butterfield <steven.butterfield2008@gmail.com> wrote:
Any idea how they get the lead screws so much straighter? Is it the manufacturing process, better tolerances/ quality control? Or is it that the trapizoidal screws are just that cheap?
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I have a belt-driven printer with 800mm Z and am too cheap to use ball screws of that size :-)
Will probably get to it once my current project backlog gets down.