Ramming parameter in PrusaSlicer 2.9.0 leads to bumps/exposed seams on the print
Hi,
I noticed some strange behaviour and results after upgrading to PrusaSlicer 2.9.0 together with my Pusa XL, which leads to very thick and exposed seams. I did a lot of test samples and came to the conclusion, that it's depending on the parameter "Enable ramming for multitool setups" in the filament/advanced section. I didn't really care about that parameter in the past, as there was no obvious problem. I'm unsure, but as some of my custom presets have this disabled, it might have been a different default setting in the past or it resulted from my MK3 custom profiles. However, it's actually disabled within all system presets for flexible filaments by default...
When disabled in 2.9.0, the toolhead resides at its last position at the print-object for 1-2 seconds, before moving away. As this occures even on perimeters, it leaves corresponding artifacts/bumps on the print. When the setting is enabled, the toolhead is instantly moving away from the printed object.
I could not reproduce this behaviour with 2.8.1 (there's only a very short rest, lasting parts of a second) and from my perspective the 2.9.0 creates incorrect output, here: The toolhead should never rest at a position within the perimeters.
Can someone try to verify and what are your assumptions on that- a bug?
Additionally, I'm wondering why the ramming parameter is disabled in all presets for flex filaments?
Regards,Jochen