Retraction on the fly
And all three have been very useful, thank you.
I use S3D so now need to find out how to configure it.
S3D is odd, to configure firmware retraction you need to un-check "Retraction" in the Extruder tab and check "Include M101/M102/M103 commands" in the GCode tab of the process settings.
Do I simply uncheck the Retraction box under Ooze control and then add the M207 command to the script for retraction? If so, do I have to do this for all my processes in S3D?
I am still confused.
In the tabs of the 'Process' I have unchecked 'Retraction', turned on 'Use M101/102/103' and added 'M207 S5 R-0.1 F60 T30 Z0; Set retraction parameters S - Length of retract, R - Extra length on re-start, F - Retract Speed in mm/min, T - Re-start speed, Z - Nozzle lift on retract.' to the Retraction Script.
The resultant g code has M103 and M101 but no values set. What am I doing wrong?
Here is a snippet of code:
G1 X-28.049 Y0.016 E0.0008
G1 X-28.005 Y0.000 E0.0023
G1 X-26.577 Y0.000 F4800
G1 X-27.885 Y-0.467 E0.0665 F1800
G1 X-27.894 Y-0.470 E0.0005
That's correct, when you use firmware retraction you need to define the retraction amount and speed using M207. You can do this in config,g and/or in the start gcode of your slicer.
Okay, thanks David. I will move the definition to the 'Start' code and have a play.
Dougal1957 last edited by
also you will have to up the F parameter 1mm/sec retraction is very slow it will cost you around 15 secs on every retract cycle
The setting is specified in MM/Min so you need to multiply the figures by 60
Thanks, Dougal, I had already worked that one out before I started a print! It would have been painstakingly slow.
However, I have noticed that I am now getting far more retractions than I ever have done before. On a circular part with three perimeters, my printer is retracting at the end of each perimeter - never done that before. Also, with far more retractions, some of them on ridiculously small moves, the accumulation of all the retractions, in a small space, is causing some problems immediately after and some areas of infill/surface are sparse.
I think that's a limitation of S3D. It doesn't really understand firmware retraction. If it did then the options to set a minimum travel distance to retract for and whether or not to retract on layer change would still be available.
Martin1454 last edited by
@dc42 Do you know why I can't tune this "on the fly"?
I tried, (using simplify3d), but i doenst respond to the change.
I dissabled retraction on extruder tab and enabled m101/102/103 on the gcode tab, and added an m207 line on my starting code.
I checked that i does not change by enabling and disabling Z hop in the M207 that i send through the web interface?
Test your M207 retraction settings by sending G10 and G11 commands from the GCode Console in DWC.
Martin1454 last edited by
@dc42 nevermind - found the problem - for a brief moment, i frogot S3D have independent "retraction" settings for the 2 extruders, so I only dissabled one of them -.- Got it working now. - but thanks for the quick response.
Quick question - Does linear advance/pressure advance improve retraction?
deckingman last edited by