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Oozing, Retraction lines

Posted: Mon Mar 20, 2017 2:17 pm
by Omojesu
Flat horizontal prints like name plates are being marred by oozing from the nozzle; these retraction lines are spoiling what could be really beautiful print.
DOES ANYONE HAVE THE SETTINGS ON A RAISE3D N2 TO STOP THE OOZING?????
THANKS

Re: Oozing, Retraction lines

Posted: Mon Mar 20, 2017 5:27 pm
by lami3d
what is the filament you're talking about ? what are your settings ? what's slicer ? picture of the part ?............

Re: Oozing, Retraction lines

Posted: Tue Mar 21, 2017 1:06 pm
by walshlg
yes retraction is complicated and is different for different filaments and different temperatures. To test retraction I make 3 cones and space them out about 1 inch apart, print 1 shell, no fill then start tweaking the retraction. If its oozing all over then its likely that you extrusion temperature is too high.

Re: Oozing, Retraction lines

Posted: Tue Mar 21, 2017 8:55 pm
by Jetguy
Big flat topped infills like nameplates have travel moves- hence retraction that moves the model over the middle of the print.

Yes, most slicing programs do this.
Solution??
Z hop.
Simply put, when you travel move the nozzle in a non-extruding move, you lift the nozzle/lower the bed to keep the nozzle from touching the layer.

Why is it not turned on by default?
Because it adds time to the print job, often is NOT required, and is just extra movement most of the time.

Re: Oozing, Retraction lines

Posted: Tue Mar 21, 2017 8:57 pm
by Jetguy
Then you are going to complain about this adding a lot of time to the estimated prints viewtopic.php?f=4&t=1013&p=9409&hilit=zhop#p9409

Re: Oozing, Retraction lines

Posted: Wed Mar 22, 2017 7:52 am
by Omojesu
Thanks to lami3d and Walshlg your suggestions are appreciated.
Thanks Jetguy, true it would add more time to what is already too long a print time but I think its the price to pay for an excellent print; no jetting around I guess :lol:

On another note, Jetguy how does one make those red windows and red text over a screenshot?

Re: Oozing, Retraction lines

Posted: Wed Mar 22, 2017 5:08 pm
by Jetguy
Sadly, use alt+printscreen to capture a specific window.
Open MS paint, crtl+v to paste screenshot, add text and highlight areas or details, save out as a jpg.

Re: Oozing, Retraction lines

Posted: Sat Mar 25, 2017 6:08 pm
by Omojesu