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Frequently Asked Questions (FAQ)
Vojtěch Bubník edited this page Jun 3, 2019
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Feel free to discuss at #2074 or #1226.
That is the final ramming before the filament is pulled from the nozzle and parked into the filament switcher. See #1355 for further details.
Why is the jerk unit in mm/s, if the physical unit shall be rate of change in acceleration = mm/s^3?
The GRBL project overloaded the term of "jerk" to define maximum instantaneous velocity change, which is easier to be implemented by 8bit controllers, and most of today's 3D printer firmwares are based on the GRBL planner. See #1355 for further details.
A perfectly flat surface may not stay perfectly flat after being rotated in a 3D modelling software. If the slicer happens to slice across such a no more perfectly flat surface, weird one layer thick islands may show up. See #2434 for further details.