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MK3S X-axis Shifting?  

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Touchstone
(@touchstone)
Active Member
MK3S X-axis Shifting?

Bought a couple years back, only recently built, excited to print something, but I'm seeing what I think is a shift in the x-axis that happens only sometimes. I've gone through the troubleshooting for x-axis shifting, which did mostly resolve my problem mainly through the tightening of the x-axis belt, but I'm still seeing issues. You can see the issues in the images below. I don't know if perhaps I should tighten the x-axis belt more, till it is a little difficult to pull the parallel sections together, or if there's something else I could do that is obvious to those with experience.

Posted : 26/09/2021 9:05 pm
Touchstone
(@touchstone)
Active Member
Topic starter answered:
Belt status

X 248
Y 266

I can't get the x-axis belt any more loose. The top two holes for the screws holding the x-axis motor are way too tight to allow adjustment. The angled screw is loose.

Posted : 26/09/2021 10:23 pm
Dan Rogers
(@dan-rogers)
Noble Member
print a tension gauge

Get yourself some Prusament PETG and print a belt tension gauge.  There is more to getting X slide butter smooth than loosening a belt.  The belt should be fairly TIGHT - tighter than you would think by hand.  Must be prusament PETG (other PETG will not give accurate read, and PLA  -no, don't do that)

Throw away the numbers from the control panel.   They are not belt tension.

 

Posted : 27/09/2021 4:05 am
Touchstone
(@touchstone)
Active Member
Topic starter answered:
Belt Tension Gauge

Wouldn't make more sense to just buy a real belt tension gauge? They're cheaper than a spool of PETG. I have no idea if the ad-hoc tension gauge will even print. I find it strange that Prusa doesn't give real values for tension, screw torque, etc. The tools to measure these things are relatively cheap (compared to the printer itself) and far more accurate.

Posted : 27/09/2021 6:43 pm
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