Atom feed of this blogPrinting a temperature calibration tower for PETG with Slic3r 1.2.9
https://github.com/slic3r/Slic3r/wiki/Conditional-Gcode-Syntax-Spec doesn't work, but it will interpolate "[variable]" at least.
Go to https://www.thingiverse.com/thing:2729076, get SmartTemperatureTower_PETG_220-265.stl, Slic3r it to 0.2mm layers, and in Printer Settings -> Before layer change G-code, enter this:
; layer=265-5*int(([layer_z]-.35-1.4)/10)
Export G-code. Run this on the file:
perl -lpi -e '($n)=/layer=(.*)/; if ($n) { $_="M104 S".eval($n); }' SmartTemperatureTower_PETG_220-265.gcode
Print that.
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