12
Popping and oozing is almost a guarantee that your filament is wet.
So that's what I thought... Except for similar issu s with extended drying.
I building an enclosure with a rotary dehumidifier to keep things low, but despite the tell tale signs I think something else was going on.
Honestly the pla could have just been wet from the factory, I’ve had rolls from top tier filament companies come with condensation in the vacuum sealed bag, sometimes stuff slips through.
I highly doubt your nozzle is worn out unless you've been printing with any special tough filament (e.g. carbon fibre core). It's completely different machine, but I have over 300 hours on mine and I haven't had to replace the original brass nozzle yet.
Edit: Perhaps try printing a solid section of only the first layer (no need for the whole bed, but make is fairly large). See if the lines mostly all join up, then reprint without changing anything to check if it is consistent.
No special filament, other than <10g TPU. Interesting I'll try the test. I think I'll get the dragging though, as I was trying to do some business card type prints that were basically what you're suggesting and got issues. Sometimes the first layer would be ok, sometimes not. It would wind up dragging it around and as it was warm, it would roll the layer into a "snake"
Is the mini fan cooling the heat sink part of the nozzle working?
I had an issue with the adventure 5m pro where prints started to fail and the nozzle got clogged, it was the fan not working and plastic melting where it shouldn’t.
The customer support gave me another fan and a mew nozzle.
and a mew nozzle
Glad they were responsive, I'm used to customer support lines just pussyfooting around.
Hopefully they weren't just trying to prevent you caterwauling
I wonder if the old fan failed due to tin whiskers?
I'll see myself out
Sounds like there could be something clogged in the nozzle, I would try pushing through some filament or nozzle cleaner at high temps (300c ish) to try and burn things out. General advice is never use different materials on the same nozzle, but that doesn't stop most of us.
This likely won't solve your z axis shift but it may help things. I have no experience with your printer or even brand though, so I cannot comment about whether the software or hardware may be to blame for some issues, but it sounds like there's more going on that a partially clogged nozzle.
I'm not sure if it's the Z or gunk building up and dragging. Also with the new nozzle it's been only PLA and no joy whatsoever.
Did you get the new nozzle in and issues have not changed?
correct. I initiated a return with amazon. I have had a 250g spool in the drier since about 10am today, and will try it this evening, but if that doesn't work I'm just returning it.
In trying to do a cold pull (which you do in this machine by attaching the nozzle upside down and manually pushing filament in), it was oozing and popping with the remnants of the previous filament, which to me says very wet filament?
I had tried drying filament for ~8hrs yesterday with no good results. Is there something else that could cause the oozing issue? My friend brought up that maybe the temperature sensor isn't working properly and it's hotter than it thinks it is?
It depends on the filament you use but if you are using brass nozzles, best to get use to replacing them periodicly. Just look at thingaverse or the prusa site for nozzle assessories and look at how people make cases for multiples sizes and numbers of nozzles. IDK what kind of quality that FlashForge has but its pretty typical to wear out the nozzle (just maybe not as fast as you are experiencing)
but you might be having problems with the preloading or the tension on the filament feeding gear. IDK the method that your printer uses but I had similar problems with my PRUSA until I replaced the Hotend PTFE tube. Those will also wear out so get a few if your printer uses that feeding system
yeah I anticipated wear, but with <2kg of material that seems excessive no? I did have some feed issues, but even with those resolved and it feeding nicely, I still have problems. A friend of mine did suggest that maybe with the feed issues I managed to do something that brought the nozzle out of spec and that's why I'm getting issues.
For reference I have an Anycubic s1 with 1,000+ hours on the brass nozzle and it was still fine when I changed it.
Thanks! This kind of insight is super helpful. Are you a poster here often? I was able to get decent prints again by changing the layer from 0.16 to 0.20. Still disappointed and confused as to what happened, but will probably keep the printer. Not sure if it makes sense to do a "wrap up" post for anyone else searching later.
Also: go team venture!
Great to hear your prints are working again. Maybe extrusion problem and you need to hand tweak your flow rate for .16?
Me to! I was almost done with a batch of prints for a friends fundraiser (30x hat looms for knitting. Great little project, they're knitting hats for the premies at the NICU, so they needed a custom model for the tiny babys). I think you're right. With the oozing and whatnot that has to be it. I brought up the fundraiser because it had me making multiple prints of the same file. When I found a setting that worked (moving to the 0.20), the first few worked, but were a bit stringy, but by the 3rd/4th one they were printing flawlessly.
I guess maybe when things got screwed up at 0.16 the nozzle had some funkiness, and with enough material it worked itself through? Still doesn't explain why that brand new nozzle screwed up in the first place at 0.16 (which suggests the flow rate issue you brought up), but I'll take the win.
you might want to check how tight the filament is before it goes into the system, like it was a popular trend to find a way to get your spools on bearings instead of free spinning, as that extra tension goes a long way to create problems.
Good luck, hope you can fix it without having to tear down the whole print head
Thanks to everyone for the input, after drying a ~100g spool of PLA for 8 hours and having failed prints on the original nozzle and new nozzle I have initiated a refund.
this post was submitted on 12 Sep 2025
12 points (100.0% liked)
3DPrinting
19770 readers
115 users here now
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or [email protected]
There are CAD communities available at: [email protected] or [email protected]
Rules
-
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
-
Be respectful, especially when disagreeing. Everyone should feel welcome here.
-
No porn (NSFW prints are acceptable but must be marked NSFW)
-
No Ads / Spamming / Guerrilla Marketing
-
Do not create links to reddit
-
If you see an issue please flag it
-
No guns
-
No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
Moderation policy: Light, mostly invisible
founded 2 years ago
MODERATORS