Oozing, Retraction lines

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Omojesu
Posts: 36
Joined: Sun Sep 04, 2016 6:21 pm

Oozing, Retraction lines

Postby Omojesu » Mon Mar 20, 2017 2:17 pm

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

lami3d
Posts: 227
Joined: Sat Oct 29, 2016 7:40 am
Location: Marseille - France

Re: Oozing, Retraction lines

Postby lami3d » Mon Mar 20, 2017 5:27 pm

what is the filament you're talking about ? what are your settings ? what's slicer ? picture of the part ?............

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walshlg
Posts: 1346
Joined: Wed Mar 23, 2016 12:01 pm

Re: Oozing, Retraction lines

Postby walshlg » Tue Mar 21, 2017 1:06 pm

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.

Jetguy
Posts: 2487
Joined: Tue Mar 22, 2016 1:40 am
Location: In a van, down by the river

Re: Oozing, Retraction lines

Postby Jetguy » Tue Mar 21, 2017 8:55 pm

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.
Attachments
Zhop.jpg

Jetguy
Posts: 2487
Joined: Tue Mar 22, 2016 1:40 am
Location: In a van, down by the river

Re: Oozing, Retraction lines

Postby Jetguy » Tue Mar 21, 2017 8:57 pm

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

Omojesu
Posts: 36
Joined: Sun Sep 04, 2016 6:21 pm

Re: Oozing, Retraction lines

Postby Omojesu » Wed Mar 22, 2017 7:52 am

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?

Jetguy
Posts: 2487
Joined: Tue Mar 22, 2016 1:40 am
Location: In a van, down by the river

Re: Oozing, Retraction lines

Postby Jetguy » Wed Mar 22, 2017 5:08 pm

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.

Omojesu
Posts: 36
Joined: Sun Sep 04, 2016 6:21 pm

Re: Oozing, Retraction lines

Postby Omojesu » Sat Mar 25, 2017 6:08 pm

Attachments
RAISE3d reply.jpg

Mustachio
Posts: 5
Joined: Wed Jun 13, 2018 5:11 am

Re: Oozing, Retraction lines

Postby Mustachio » Sat Jun 16, 2018 6:21 pm

I can not make it zhop and retract on travel moves. Although it stops extruding on travel moves it does not stop it from oozing filament and making lines. This also causes under extrusion if Im printing a model that has holes/circles in the center. Is there a way in the settings to make it zhop and retract on travel moves??


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