Repeated Probing on right side of bed
Hi,
currently my MK4s behaves a bit strange. While probing before the start of the print, on right outermost probing points the head probes at least 2 times, most of the time 3 times
I already checked that nothing is stuck under the Sheet and tested with Satin- and Textured Sheet. It always repeats at these Points.
When moving the x-Axis by hand the head glides freely, but on the right side, right where the probing problem appears to be, it is extra easy to move the head arround (But just on the axis direction - there is no play or rattle while trying to move the head up/down or back/front)
I cant explain this to me. Some weeks ago the Pritner printer Probed just fine. It does not affect quality, but the extra probingtime is a bit annoying.
Maybe somebody has some ideas where the extra low resistance is coming from, or what else the issue could be
Thanks and Best Regards
RE: Repeated Probing on right side of bed
Make sure those thumb screws on the extruder are tight.
RE: Repeated Probing on right side of bed
Calibrate (align) the Z-axis
RE: Repeated Probing on right side of bed
Sorry for the late Answer, I found the Issue now.
Ensuring the Filament loaded in the printer is not under tension before Calibration starts, solved the Issue.
Tension in the Filament was enough to throw off the Loadcell while probing the bed. My Filament was routed from the left of the printer and the PTFE Tube / Filament within was stretched the most, when probing right Side of bed started. Unrolling the Filament a bit helped.
RE: Repeated Probing on right side of bed
One of the first items I printed after building my Mk4 was a spool sleeve so that the spools would rotate more easily in their holders. I didn't make one with bearings, but even the simple sleeves will spread the contact area out and reduce friction considerably. Plus, this is a safe location to spray some dry silicone lubrication from time to time to further reduce friction. This was most needed for me while using TPU, which has a bit more friction where it goes through the filament guide. Anytime the Z was lowering to the bed without slack in the filament, it would make multiple stops on its way down. With the lubricated spool roller, everything works perfectly.
-J