@dc42 said in Issues with pressure advance since RRF 3.4:

@Heartleander81 said in Issues with pressure advance since RRF 3.4:

@R4ffers oh yes.
@dc42 is there also something like pressure advance smooth time under RRF? A few clippers have the problem with the high smooth time, but those who have problems are mostly DirectDrive extruder users. Maybe that's an approach you can follow.

No, there isn't anything similar. I will look into that Klipper feature.

Hi @dc42, just wanted to +1 this feature.

I run a delta / duet WiFi with a ~400mm bowden and 0.325 pressure advance, with input shaping. The print quality is excellent.

However, when I turn up the print speed/acceleration, I also need to increase extruder jerk - as expected with pressure advance. EXYZ all cope fine - no skipped steps or filament stripping - however on short zig-zag movements it tends to jerk rapidly back and forth which creates some noise (and the extruder is/was fixed to the frame).

As a result, I have switched to a suspended/lying extruder so that I can turn pressure advance down and maintain higher print speed but I see this as a temporary solution.

If smooth pressure advance is anything like the graphs here it looks like it might help to resolve this issue

Do you think it would have any benefits for this scenario?

@dc42 said in Issues with pressure advance since RRF 3.4:

@Heartleander81 said in Issues with pressure advance since RRF 3.4:

@R4ffers oh yes.
@dc42 is there also something like pressure advance smooth time under RRF? A few clippers have the problem with the high smooth time, but those who have problems are mostly DirectDrive extruder users. Maybe that's an approach you can follow.

No, there isn't anything similar. I will look into that Klipper feature.

Hi @dc42, just wanted to +1 this feature.

I run a delta / duet WiFi with a ~400mm bowden and 0.325 pressure advance, with input shaping. The print quality is excellent.

However, when I turn up the print speed/acceleration, I also need to increase extruder jerk - as expected with pressure advance. EXYZ all cope fine - no skipped steps or filament stripping - however on short zig-zag movements it tends to jerk rapidly back and forth which creates some noise (and the extruder is/was fixed to the frame).

As a result, I have switched to a suspended/lying extruder so that I can turn pressure advance down and maintain higher print speed but I see this as a temporary solution.

If smooth pressure advance is anything like the graphs here it looks like it might help to resolve this issue

Do you think it would have any benefits for this scenario?