Strange BLTouch issue. Hightmap it off while printing
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@RocketPat said in Strange BLTouch issue. Hightmap it off while printing:
Bed compensation in use: mesh, comp offset 0.000
that is fine. why do you think its not working?
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i was just wondering about the 0.000, but still i have that strange issue that my map is kinda flipped around. The right side is too far up and the left side is too far down... its doing the opposite of what the mesh is giving out.
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another possibility could be sagging linear rods causing a tilt in the hotend carriage.
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hm, the hotend shoud be fine i didnt notice any sagging there. I will now rebuild my old stock hotend (cr-10) and see if its causing the same problem. If not, the bracket that i am using to hold my Titan Aero is very bad. I will give an update in a few hours.
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so, i rebuild my entire extrudersetup and i still have that issue.
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can you measure the z offset twice
once on the left and once on the right?
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yep i followed that tutorial: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe
and on the left side its 1.294 and on the right side its 0.935i think this is not good, becuase the offset should be the same on every side right?
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@RocketPat said in Strange BLTouch issue. Hightmap it off while printing:
1.294 and on the right side its 0.935
that would indicate rotation of the carriage.
this could be the problem. but its a mechanical problem.
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For my X-Axis i am using a modified version of the Prusa printable parts. But i noticed that my left side is broken, where the smooth rods come into the plastic part.
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Hey guys, so i printed out some new X-Axis holders and now there is much tighter fit as before and i measured 0.726 and 0.658 on both sides, so far its much better then before but still not perfect. But i did a few test prints and they came out with a perfect first layer. And i dont have any more issues with the rotation of my X-Axis. Thank you for all of your help to find out what was causing that issue
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Hi,
while this is an older thread, the problem itself is very current, unfortunately
While I had it for an Anycubic Mega S printer, it was basically the same root cause. I solved it w/o having to replace any hardware, but with some additional mathematics to compensate for the rod twist. I wrote something up explaining the issue and also provide there a little online tool to create appropriate compensation GCode commands. This works great for me and I have no more issues with the bent hardware, so maybe it is a proper resolution for some of you also...
Regards, habitoti
