I haven’t figured out how to make X rail physically True Perpendicular to the Y rails. But I don’t care…
Am happily using Klipper’s software/config XY skew compensation settings to make up for my poor physical build quality. Did some test calibration prints using a super thin 100mm x 100mm Crown model. Larger model would be better, but the diagonal of ~141.42mm is close to the size limit of what my calipers can measure.
Ideally, software should help trivialize obtaining dimensionally accurate parts despite a crappy initial assembly, and, also help detect degraded/anomalous vibration behavior resulting from loosening grub screw, or, frame/mount screw. Proactively raising actionable maintenance alert(s)…
My skewed X rail maybe in part due to my pulley orientations being wrong. Noticed in Oct but still haven’t fixed, because the printer was printing fine, at least I thought so until I tried printing close to @Lithium366’s accelerations/speeds. Will update if fixing my pulley orientation helps reduce physical X rail skew. First though, before anymore variables/changes, am trying out a new part cooling duct design…