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docs: Note impact of warping during pressure advance tuning 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Kevin O'Connor 2018-10-25 12:03:47 -04:00
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docs/Pressure_Advance.md
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@ -97,6 +97,15 @@ Important Notes
corner. If this occurs, then ignore that corner and tune pressure corner. If this occurs, then ignore that corner and tune pressure
advance using the other three corners. advance using the other three corners.
* Check for warping at the corners during the test prints (the corners
detaching from the bed and rising a small distance upwards during
the print). If one corner appears warped then ignore that corner
when tuning. If significant warping is seen throughout the test then
typical solutions are to reduce the slicer's first layer speed,
adjust the bed temperature, and/or to use the slicer's brim feature.
Pressure advance itself is unlikely to impact warping, but this
tuning test is sensitive to it.
* If a high pressure advance value (eg, over 0.200) is used then one * If a high pressure advance value (eg, over 0.200) is used then one
may find that the extruder skips when returning to the printer's may find that the extruder skips when returning to the printer's
normal acceleration. The pressure advance system accounts for normal acceleration. The pressure advance system accounts for