Feature request: Seperate retract/recover speed controls

[3ntrlab]

I admit that the retract/wipe is not a piece of cake, BUT we are starting to use it seriously and prints are quite good. Bowden, even on a large three extruder machine (600x400x500)
Therefore, I wouldn't dismiss S3d at all, especially comparing to other solution available: the really sorely missing feature is the "prime pillar"....
Best Regards
Davide Ardizzoia

[JoeJ]

My Bowden extruder prints look fine too. And that's just using retraction and coasting. I haven't even messed with wipe yet, although I'm sure that would help more. I also use a tiny amount of negative extra restart distance since the retraction distance is so big.

S3D has the really nice feature of being able to change settings as you go through a part. So you could print some type of retraction test part and vary the retraction distance every 10mm or so. That makes calibration really easy and we were able to find the ideal retraction distance pretty quickly.

[innkeeper]

Any ETA for this one.... this was a major improvement in merlin over a year ago...and is supported in the free packages.

its supported in smoothiewear too

for a pay package, id expect features like this to be added quickly not a year late...

[ovidiu]

+1 for this feature... soon. (for the cost of this package it's surprising there's no news...)

[CapnBry]

I just bought this software and for all the features that are supported and so much better than other packages, I am very surprised to not see firmware retract G10/G11 as an option, or at the very least different retract/recover speeds. My large build area printer has a bowden tube that's almost a meter long and it can whip that filament back pretty quickly, but recovering is a LOT slower before plastic starts to flow again. It works great with the smoothieboard G10/G11 but not so great with the retraction from Simplify3D.

[KC_703]

Not sure if this was mentioned, but maybe the coast setting could help?

Its basically the reverse of what you're proposing, but could work the same. If you stop the extrusion earlier, then retract it should act as though the nozzle pressure decreases "faster" (because it would have stopped extruding at your coast distance). Then the retract speed would really be how fast you want extrusion to resume.

[Geoff Sim]

+1 for G10/G11

[payala]

+10 for G10/G11

[dorgeman]

+1

You want to retract as fast as possible. You cannot really recover at that same speed because the filament needs to melt on recover. Although the extra ooze features in Simplify3D are nice, they do not compensate for the lack of this feature. Without a separate recover speed, you would get better retract performance with firmware-based retraction (which Simplify3D should also support). With separate recover speed, and the extra ooze features that are already present, Simplify3D retraction would be about as good as it gets. I would think that both separate recover speed and support for firmware-based retraction would be pretty trivial things to add.

[ashleywebster]

+100 for this feature. I posted it almost a year ago so I'm glad to see it come around again and get so much support. I vote for both: implementation of G10/11 and a separate prime speed setting in the slicer. As others have pointed out, the logic is simple, it's all about nozzle pressure: You want to retract as fast as possible to stop oozing, but prime at or near printing speed so you don't create excess pressure in the nozzle at the start of the next line. Negative restart distance is not the answer and coast relieves pressure before retraction so doesn't really do much for the prime movement.