I recently received my SuperLongBoard and have had to drop the X-Axis speed on my MK2 48x30 down to LongBoard defaults of 4500 mm/min due to binding. Not one to be happy about that, I’ve taken everything apart in order to figure out what exactly is causing the issue but have had no luck.
Right now, I am only running the lead screw, the two bearings, and the ACME clamping nut - the gantry and backlash nut are not attached. If I start creeping the rapid jog speed over 4000, the motor will sometimes make a loud sound and not turn the lead screw but lower speeds are fine. I’ve also tried swapping out the Z and X motor with no noticeable improvement.
I did come across this topic by Chris from 2019 talking about resonant frequencies (Fixing the X-axis Torque-out issues), which seems pretty close to what I’m seeing.
I’m thinking I might just be SOL when it comes to getting the speed improvements the SLB can offer (at least for the X-Axis), but I’m hoping that someone else might have encountered the same issue and figured out what to tweak.
Thanks!