Acceleration setting infill/outline

[glx51mm]

Having troubles with ghosting at high speed and high acceleration settings I thought it would be quite useful to be able to set different speed and acceleration values for infill and outlines (Marlin firmware, maybe for other). For example low speed/high acceleration for outlines (cleaner outlines without excess material at direction change) and high speed/low acceleration for infill (printer won't shake like crazy but overlap should be reduced in case of very low acceleration settings).
Any chance of seeing this at any future release ?

[chive34]

I second this feature request. Shocking that this paid program lacks the functionality of shareware like RH where you can customize accelerations from within the app, instead of having arduino open at the same time to tweak acceleration and Jerk settings. The different filaments we print need very different settings. Flex is so picky about having too much E acceleration for example.

[JoeJ]

I do this all the time with my prints. It only requires adding one gcode line into my starting script and then all I have to do is edit that number anytime I want to change the acceleration values. No need to use arduino or anything else you guys are talking about. Having a "GUI" option for it wouldn't save you any mouse clicks over just editing the number in your starting script.

For reference, read this: http://reprap.org/wiki/G-code#M204:_Set ... celeration

[abear]

Add my vote for a GUI to control acceleration/deceleration settings.
I'd really like to remove those ripples from my prints.

Thanks

[Marshall]

YES!!!

Please, ADD THIS FEATURE!

It would affect accuracy highly in the areas the OP specified. I too saw the "desk shake" infill syndrome and immediately knew those oscillations could not be helpful to the overall printing environment. Even though everything shakes together in-sync, it's still telling you something clear about the stress physics applied against the machine when it happens. The most notable event is the corner overshoot due to speed change. If this could be dialed-out at 90° corners, some of my prints would be near perfect.

...Obviously it can be tuned, we have the G-Code posted above. But interfacing this feature into GUI would save time for some of us high-speed mouse clickers. Or, the few of us who don't seem to ever have time to even breath between our prints. It might just help even by constantly reminding us it's there for use. Graphical features have a tendency of getting used more often; I think we can agree on that.

[JoeJ]

For all you fast clickers out there, just copy the code below into your "additional commands for post-processing" section on the Scripts tab of your FFF Settings. This will let you use different acceleration settings for perimeters, infill, solid layers, etc. Just change the M204 P-values to adjust the acceleration for each section as you see fit.

Code: Select all

{REPLACE "; outer perimeter\n" "; outer perimeter\nM204 P1000\n"}
{REPLACE "; inner perimeter\n" "; inner perimeter\nM204 P2000\n"}
{REPLACE "; solid layer\n" "; solid layer\nM204 P3000\n"}
{REPLACE "; infill\n" "; infill\nM204 P4000\n"}

Note: apparently the way the M204 command works with Marlin changed in May 2015. Looks like earlier firmware versions used M204 Snnn, so in that case, just replace the M204 "P" with an "S". Refer to this link to make sure you are using the correct command for your printer: http://reprap.org/wiki/G-code#M204:_Set ... celeration