UPDATED: you need to pause between reverse and forward commands. still working out why, exactly...

This is for testing rapid reversal in gcode for RepRap, MakerBot, etc. It does a find and replace of M103 and M101 lines in your gcode file.

Detailed instructions are in the top of the file.

Use it like the following: python RAPID_REVERSALify.py FILE.gcode printRPM reversalRPM waitTime e.g.: python RAPID_REVERSALify.py oozebane.gcode 2.857 25 200

you will get the printout: we will print at 2.857 RPM we will rapid reverse at 25.0 RPM we will wait for 200 ms during rapid reversal

and the file: oozebane_RAPID_REVERSAL.gcode will be created

First, every M103 command is replaced with: M103 (Extruder off) M108 R__REVERSAL_RPM M102 (Extruder on, RAPID REVERSAL) G04 P__WAIT_TIME (Wait t/1000 seconds) M103 (Extruder off)

Then, every M101 command is replaced with: (reaccelerate to prev position) M108 R__REVERSAL_RPM M101 (Extruder on, RAPID FORWARD) G04 P_WAIT_TIME (Wait t/1000 seconds) M103 (Extruder off) M108 R__PRINT_RPM M101 (Extruder on, forward)