DrWoo 1 Posted April 23, 2016 in Rims appearing every 5 layers on fine prints? (edited) I don't own an Ultimaker, but several CEL Roboxes. The printer is really excellent, easy-to-use, very versatile with interchangeable tool heads (dual material just released, drag knife under development, laser engraver and paste extruder on the horizon) and quite affordable. The custom-built AutoMaker software relies on Cura for slicing, which is why I'm posting my question in this forum: I've spotted not only on mine, also on other people’s Roboxes on very fine prints (20 micron layers) the phenomenon of tiny rims, vertically reoccuring approx. every 5 layers. The precision with which the rims reoccur makes me believe that it is not a mechanically-indicated issue, but an issue caused in software, perhaps something like a numerical rounding error. Has anyone of you folks ever seen these rims on any fine Ultramaker prints? If so, could you post images? Edited April 23, 2016 by Guest Share this post Link to post Share on other sites
Dim3nsioneer 356 Posted April 23, 2016 in Rims appearing every 5 layers on fine prints? No, we don't as long as the machine is working as it should. Must be a Robox specific issue. Share this post Link to post Share on other sites
gr5 896 Posted April 25, 2016 in Rims appearing every 5 layers on fine prints? It looks like a Z axis issue. The Z axis moves a smaller distance than it should every 5 layers. I'm wondering if you are close the resolution of the Z and you lose a step every 5 layers. Stepper drivers are very complicated and with microstepping it is very common for some microsteps to do nothing (not advance the motor) for complicated reasons that I don't fully understand such that it is not quite linear movement (but close enough for most things). Alternatively is that Z distance where the pattern repeats an identical distance to one full rotation of Z screw? It seems unlikely but worth checking. Share this post Link to post Share on other sites
