RE: Extrusion problems?
My belt numbers are 296 and 295; they mean nothing for belt tension. Lower numbers are bad. The numbers are produced by measuring the current required to move the axis. More drag and friction, you get lower numbers. A lousy engineers idea : "Hey, let's tell customers to warp their printers frame to get belt tension numbers!" So yes, you can tighten the belts and get lower numbers, but you are bending things to get there.
RE: Extrusion problems?
Thanks, I'll give that a try when I get home.
I know the z brackets at the top are flush to the frame and the smooth rails are flush inside the brackets. I have no idea on the bed. If the mesh bed leveling data is correct, then the right side is ~0.3 lower than the left at the worst point - rear of the heat bed (if I'm interpreting the numbers correctly).
The more time I spend trying to solve this, the more I am amazed that these printers work at all given the small tolerances needed.
RE: Extrusion problems?
My belt numbers are 261 for the x and 287 for the y. If this is causing the problem, there needs to be a more uniform way of describing the required tension when assembling for someone like me. Thanks again
RE: Extrusion problems?
The mesh numbers only tell you how far the PINDA measurements are off the bed and don't say much about frame skew. You need a mechanically square frame. There are skew numbers in the LCD after a self test I think. They might be helpful.
RE: Extrusion problems?
The 260 v 280 numbers just mean you have more drag & friction on X than you do on Y. They mean nothing for belt tension. I suspect you'll see some X crashes once you get past the calibration woes.
RE: Extrusion problems?
These numbers?
https://photos.app.goo.gl/AHHHRn8KNRmUccMT9
https://photos.app.goo.gl/5bUJbEnDB2aVRvcj8
https://photos.app.goo.gl/qsdkxkyy51gVjHdE8
RE: Extrusion problems?
Yep - and they seem good.
RE: Extrusion problems?
After a few weeks of troubleshooting with Prusa support, it turned out the problem was a bad z-axis motor. Once the left z-axis motor was replaced, the problems went away. Now I only have self-inflicted printing problems.
Thanks for all of the suggestions!
RE: Extrusion problems?
bed leveling only works with the steel sheet on the bed
the only calibration the needs the sheet off is the xyz calibration
double check that your Z smooth rods are fully seated in the top ans bottom mounts and that the top mounts are at the same height on the top frame