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Ultimaker 2+ Estep calibration with data, variance ok?
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· Ultimaker 2+ Estep calibration with data, variance ok?
9 hours ago, X-Type said:
First of all a notice on what I assume is some kind of bug. The first extrusion run after every M92 change of the estep value, gives a way off result.
For older versions of Marlin (like the one that is used in UM2) the current axis position is lost after M92 (or better: is not longer accurate).
Don't use M92 on its own, always send a subsequent G92 Exxx.xx to reset the position.
9 hours ago, X-Type said:
So, I have tested three extrusion lengths 100mm, 200mm and 300mm. It seems the longer extrusion run, the less filament is extruded.
I don't know the specific reason why you took all these measurements, but i think the used speeds are way to fast and the filament probably just slips more and more the longer the move takes.
I would use an equal (and lower) speed for all tests. Let's say F180 or even slower (somewhat closer to 'normal' extrusion rates). The variation should be much smaller then.
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tinkergnome 927
For older versions of Marlin (like the one that is used in UM2) the current axis position is lost after M92 (or better: is not longer accurate).
Don't use M92 on its own, always send a subsequent G92 Exxx.xx to reset the position.
I don't know the specific reason why you took all these measurements, but i think the used speeds are way to fast and the filament probably just slips more and more the longer the move takes.
I would use an equal (and lower) speed for all tests. Let's say F180 or even slower (somewhat closer to 'normal' extrusion rates). The variation should be much smaller then.
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