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rapid Z axis movement on first positioning


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Posted (edited) · rapid Z axis movement on first positioning

after working through 'beforePrintStarted' script routines cura issues a


G0 F6000 X.. Y.. Z0..


if X and Y coordinates are small the high feed rate maxes out the Z rate and plunge
the print head in a quite 'unseemly' acceleration and speed toward the build plate,
former versions of cura issued F3600 which behaved more moderate

to avoid rapid Z axis movement on first positioning I cured the questionable sequence with cura's post processing module


cura/menu/extensions/post processing/modify g-code - search and replace

search:   (F6000)( X.+Y.+Z0.+)
replace:   F3000\2
regExp:   yes


F6000 X.. Y.. Z0..
F3000 X.. Y.. Z0..


there should be only one line with F6000 with Z0.. coordinate, so check your 'beforePrintStarted' script


regExp explanation
group 1 = F6000          -> F3000
group 2 = X.. Y.. Z0..   -> \2


(printer Creality CR-10S, cura 4.3)

Edited by qrti
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