Wipe tower is printing too fast.
Hello fam. I have enountered a problem i'm sure someone has had before me. While printing rPETG on the XL i noticed uneven cooling showing infill trough perimiters. To fix this i installed the https://www.printables.com/model/1013592-xl-fan-shroud-360deg/comments . It became a lot better on singel tool print, but on the wipe tower it does not have cooling power to keep up with the purging over the "max volumetric speed" causing a bit of a mess.
How do i overcome this? I wish to enforce "max volumetric speed" also on wipe tower. Or any gcode patch...
I have calibrated temp (235c) and speed (10mm3/s) for this addnorth rPETG. On stock nozzles.
"Extra flow for purging" not possible to set under 100% ?
Adjusted wipe tower accel control down to 250 it got better, but still fraying in the center and way to slow for production.
There are another post on the same subject with no replies. https://forum.prusa3d.com/forum/english-forum-general-discussion-announcements-and-releases/how-to-create-custom-g-code-to-modify-the-print-speed-for-the-wipe-tower-for-multi-material-prints/#post-336277
Thanks for reading, have a nice day.
RE: Wipe tower is printing too fast.
Update. I found this in the filament settings. Dont understand why it is on a toolchanger but ok.
Now its holding the speed limit also on wipe tower. But still it is fraying on the wipe tower. Currently calibrating down speed @7. ugh.
Am i missing something?
RE: Wipe tower is printing too fast.
Solved. I need to start practicing what i preach. The pressure advance was off. On stock PETG its 0.07 but on rPETG it's 0.09. Turns out 10mm3/s @242c is perfect also with the new cooling duct.