Printing with ASA or ABS  

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towlerg
(@towlerg)
Honorable Member

My Sovol and I have been happily printing Prusament PETG for a few months, I started to get an issue with what I assume is a partial blockage (whole or part of a layer will be empty and the finished part breaks easily along the visible void). In the short term I tried reducing speed (a lot) and that seemed to work for a while. Eventually I bit the bullet and replaced the nozzle and that seemed to resolve the problem for PETG.

Unfortunately when I tried PrusamentASA and Prusa ABS the blocked nozzle symptoms came back with a vengeance. The first layer when down (eventually) nicely but after layer 10ish it would stop extruding plastic for a layer or so then continue. I created a deal slow profile (50%) but that didn't seem to help.

My printer has what appears to be an E3D V6 clone, temperature is firmware limited to 260C. It came stock with a 0.4 nozzle. I have no reliable way to check that the nozzle is actually at the temperature it is reporting. I'm using the Prusa filament temperature settings - PETG 240/85 and 250/90    ASA 260/105 and 260/110    ABS 260/100 and 260/110.

My current flail in the dark guess is that nozzle temp is too low.

Is it unreasonable to assume that a larger nozzle would be less likely to clog?

Any advise would be welcome. I can take pictures if that will help. 

Posted : 13/09/2020 12:36 pm
gorilerman
(@gorilerman)
New Member
Try removing the extruder gear and pushing the filament directly by hand.
If the filament is fed lightly, I think the nozzle temperature is correct.
Posted : 14/09/2020 11:48 pm
towlerg
(@towlerg)
Honorable Member

@gorilerman

Hi, thanks for the suggestion but it appears I have not resolved my cloging problem even for PETG, so it looks like apperent problems with ASA and ABS is just a symptom of my overall problem. Soon as I can I'll post some pics.

Does anybody know if a 0.6m nozzle would be less likely to clog?

This post was modified 2 weeks ago 2 times by towlerg
Posted : 15/09/2020 8:10 pm
gorilerman
(@gorilerman)
New Member

@towlerg

Hello, towlerg

Are all nozzle throats metal? Or does it contain a PTFE tube?

PTFE is not suitable for use above 240 °. It softens and clogs the nozzle.

We recommend upgrading to eliminate problems around the nozzle.

I used Volcano to reduce troubles around the nozzle.
Posted : 16/09/2020 12:28 am
towlerg
(@towlerg)
Honorable Member

@gorilerman

Hi, I have the stock Sovol hotend which is a E3D V6 clone. In common with a real V6 there is a short piece of PTFE tube which acts a a guide between the top (the cool end) of the heatbreak and the extruder gears.

Posted : 18/09/2020 7:31 pm
gorilerman
(@gorilerman)
New Member

@towlerg

Hello.

 https://www.youtube.com/watch?v=h2w0Hb4suWs 

It comes out from 3:57 in the above video
It refers to the PTFE inside the nozzle throat.
Posted : 19/09/2020 12:11 am
towlerg
(@towlerg)
Honorable Member

@gorilerman

The video you linked to is for an Artillery X1 which appears to have a V6 Lite clone hotend.

Posted : 19/09/2020 1:50 pm
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