Does anyone use custom G-code to alter the PID settings for their extruder depending

3D Printing
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1

Does anyone use custom G-code to alter the PID settings for their extruder depending on the print temperature of the material they are using?

2

I do not get to that level yet but know G-coding is a known practice at the University of Tasmania FabLab machines. I don’t think we can use export/import G-code for our Stratasys Printer, but seems to be accessble to use with our new Makerbot 3D printer, this latter allows to change speed & resolution settings within its built in software/interface for PLA feed: http://www.makerbot.com/support/replicatorg/documentation/usage/
What type of printer do you use? And what type of material??

3

I just did my PID fine tuning today and I was going to use the g-code to alter the PID settings but I decided to just adjust them thru the Arduino software instead. I didn’t want to have to redo my PID settings again if I had to make any other adjustments to the firmware. Now I’m not that familiar with Arduino yet so I’m not sure if there is a way to pull the firmware from the Arduino and save it to your computer or not.

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The point I was trying to make here was that by using M130-M132 commands in the start gcode for a print, you can set the PID values for a specific print job with a specific material. Of course for minor print temperature differences, altering the PID won’t make much difference but if you were switching from PLA to Nylon, it would make sense to have an adjusted PID value.