mesh compensation causes dragging of moves
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I found my 3d printer has some issues of moving esp. after a print and even within a print, I tried many ways and final found it's caused by the mesh compensation.
With a small adaptive mesh probing area, G1 reduces the speed due to z speed limit (I think?), but the acceleration is too high that it makes very high vibration and/or even lost steps. When the head moves over the area, it looks like stopped abruptly and then restarts.
If we disable the mesh (G29 S2), the head can move freely in high speed again.
Any ideas / workarounds?
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This problem persists with a large/full mesh. It's acts fine if I reduce the max speed from F24000 to F6000.
IIUC, if we have a smoothed mesh, this could be moderated? Like I can use a script to expand the heightmap.csv from a coarse grid (11x11 in 500mmx500mm) to very fine grid, it may be better?
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@zuoyan what is your Z jerk set to to. It's likely that you need to increase Z jerk to a value that allows your XY travel novels to happen without being stopped by the mesh.
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@T3P3Tony Thanks, I read the document, it's mentioned at the bottom clearly and exactly as this.
Do we know the consequence of too high jerk/instantaneous speed change values? Like smoothed corner or lost steps?
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@zuoyan said in mesh compensation causes dragging of moves:
Do we know the consequence of too high jerk/instantaneous speed change values? Like smoothed corner or lost steps?
You only need to increase the Z axis jerk slightly. 60 to 120 mm/min range. This will have zero effect on XY motion of corners, etc.
