Single extruder, multi matertial - Tool selection (T0, T1)
 
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Single extruder, multi matertial - Tool selection (T0, T1)  

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Pasubio
(@pasubio)
Eminent Member
Single extruder, multi matertial - Tool selection (T0, T1)

Hi,
the issue apply to multi color printing on a single nozzle, through manual filament change while print is in pause.)

I'm using a non-IDEX dual extruder machine (T0 and T1 tools, RepRap Firmware on Duet board), and I mainly use the second extruder, the T1 one, so in the Start Gcode Script I use "T1" as first command. This is ok for single-material printing, because PE do not introduce "T" commands while using the default extruder.

The problems arise when I need to print with multiple colors, because while enabling 2 extruders and the Multi Material Single Extruder option PE automatically insert "T0" command just after my custom Start Gcode Script.

This behaviour is really annoying because I need to manually clean the Gcode before loading it up to the printer

Do you have any ideas in order to circumvent this problem?

Thank you!

Posted : 27/09/2021 8:40 am
jkavalik
(@jkavalik)
Member
Custom toolchange gcode

Does it generate the "T0" even if you add a custom toolchange code?

Posted : 27/09/2021 10:01 am
Pasubio
(@pasubio)
Eminent Member
Topic starter answered:
RE: Single extruder, multi matertial - Tool selection (T0, T1) and toolchange Gcode

Hi Jkavalik,
Yes, it generate the "T0" also when adding a custom toolchange code (ex. "M600").

Moreover, PE introduce that custom code also at the beginning of the Gcode file, just before the Start Gcode Script: I think that this behaviour is useless because I'm really not changing tool when the print start.

Thank you!

This post was modified 2 years ago by Pasubio
Posted : 28/09/2021 9:21 am
Diem
 Diem
(@diem)
Illustrious Member

Although it's not quite the same topic the issue is addressed in this thread:

https://forum.prusa3d.com/forum/prusaslicer/manual-multicolor/

Cheerio,

Posted : 28/09/2021 12:49 pm
Pasubio
(@pasubio)
Eminent Member
Topic starter answered:
RE: Single extruder, multi material - Tool selection (T0, T1) and toolchange Gcode - Workaround

Hi,
I found a post-processing workaround by the user Jacotheron.
Anyway I think that PS should fix that issues:

  • Maybe letting user to select the tool number for each extruder, allowing also the same value for each extruder.
  • Avoiding the insertion of the Custom Toolchange Code for the first activated nozzle at the the start of the printing process.

Thank you.

https://forum.prusa3d.com/forum/prusaslicer/perl-post-processing-strip-t-commands-for-a-message-and-m600/
https://github.com/prusa3d/PrusaSlicer/issues/4644

Posted : 29/09/2021 8:28 am
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