This Smartrap is losing steps only in the x-axis, can you guys help me figure out why?
It’s an older Smartrap with spectra line instead of belts. The controller is a Sanguinololu with genuine Pololus running a half-year old version of Marlin. The motors are all 1.8°/step. The issue I am having is a very consistent missing step when I print objects with bridging around 2" or wider in the X axis. It’s hard to pin down, but it seems to only happen when there is bridging, and in some cases corrects itself on layers there there is no gaps. The part in this picture printed without issue when I rotated it to print wide in the Y axis. Here is my Marlin configuration: https://www.dropbox.com/s/cn83fwy6z6uptj4/Configuration.h?dl=0
Can anyone give me any suggestions? I’m thinking this issue is way too consistent to be backlash or anything loose (or maybe anything mechanical). Also, the way it corrects itself is curious.