Possible to print test line after colour change (before printing)
 
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3D_MD
(@3d_md)
Active Member
Possible to print test line after colour change (before printing)

I have printed a couple of objects where I manually enter a colour change in PrusaSlicer for the last few layers (to accent my objects).

 

However, each time I do this, the first few seconds of extrusion is not perfect since the hotend has filament hanging out of it.

 

After a colour change, is it possible to perform a "line" of extrusion on the print bed, adjacent to my object, before the printer goes back to the object itself? Similar to the test line that starts each print. Thank you.

Posted : 12/12/2021 5:54 pm
Diem
 Diem
(@diem)
Illustrious Member

is it possible to perform a "line" of extrusion on the print bed, adjacent to my object,

Yes, in theory, you could write some custom gcode but you must make sure to move the extruder to a clear area to avid crashing your print.

There is another way.

When making the colour change first reply No to the color check question to trigger a longer purge, DO NOT REMOVE THE PURGE YET.

Grip the longer purge extrusion (with pliers if a hotter print) and answer Yes to the second color check question; only when the print head moves away do you pull away the purge and you should get all of it.

Cheerio,

Posted : 13/12/2021 12:42 am
3D_MD
(@3d_md)
Active Member
Topic starter answered:
RE: Possible to print test line after colour change (before printing)

Fantastic. Thank you for the reply!

Posted : 13/12/2021 2:49 pm
JoesTinman
(@joestinman)
Active Member
RE: Possible to print test line after colour change (before printing)

You can also add a small box to the right top of your model and use that as a wipe tower. Make sure in prusaslicer that the box is hit first after a color change.

Posted : 15/12/2021 8:55 pm
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