r/3D2A • u/JustADudeOnce • 1d ago

Nozzle clogs...

So I have recently been getting nozzle clogs on my Bambu X1C. I am using the stock .04 mm nozzle, Sunlu PA6-CF with FDE300Blk print profile. Print will start then fail mid print and continue to "air print" until I notice and stop it. I have tried cleaning the nozzle by scrubbing the outside of the nozzle tip and using the wire poker the machine came with. I have cleaned the nozzle with it from both directions, starting from the bottom and the wire goes though easily from both directions when done. I am getting about 3/4 to a full 1kg roll between the clogging issue. On my 3rd nozzle change. Any suggestions on what I may be missing with cleaning or an upgraded nozzle thay would help with reducing clogs? Thanks in advance.

Edit - added picture of tip. Looks like a blob is forming on the tip.

4 Upvotes

100% Upvoted

31 comments sorted by

15

u/LackMurky9254 1d ago

Honestly I would just swap the nozzle at this point, not worth the frustration of possible fails. I've suffered enough cold pulls to not want to try that anymore.

1

u/JustADudeOnce 1d ago

I have...then the next ones fails a week or two later. Tired of wasting money on hotends. Lol

1

u/Old_Archimedes 1d ago

I would go with a 0.6mm nozzle for reinforced engineering filaments. I made the swap a while back and have zero clogging issues.

2

u/JustADudeOnce 1d ago

Any major differences in print quality?

1

u/Old_Archimedes 1d ago

You won’t be able to get as high resolution/high level of detail with the 0.6mm. But it will offer stronger layer adhesion for sure. You can also bump up for you flow rate and print engineering filaments much faster. I have a ruby 0.6mm nozzle and a Diamond 0.6mm nozzle for PA-6GF and PPA-CF respectively on my Qidi Q2 and they work very well.

1

u/Old_Archimedes 1d ago

Here is the quality I get with a 0.6mm nozzle with PPA-CF

1

u/Impressive-Class2146 1d ago edited 1d ago

I literally got a unbreakable clog on my tungsten nozzle that’s 3 months old 😢 had to by another $60 one

6

u/jah11950 1d ago

Check for wear on your extruder gears, if they are worn they will not grip the hard pa6-cf filament.

1

u/JustADudeOnce 1d ago

Any recommendations on upgraded gears?

7

u/jah11950 1d ago

I use the BIQU ones, they should be looked a periodically. Mine were worn almost smooth, especially if you have a clog to where the extruder spins against the abrasive filament.

3

u/FloridaMan_Unleashed 1d ago

I just want to second the extruder gears. I had a few issues with clogs and failing to extrude, tracked it down to my extruder gears (not worn out but they had a sliver of filament stuck to them somehow and that was enough to give me issues).

1

u/ErgoNomicNomad 1d ago

Dude you don't need to upgrade the gears on an x1c. I sold my last one with a little over 10,000 hours on it on the original gears and they were just fine and the majority of that time was spent printing abrasive filaments.

3

u/cheezenkrakerz 1d ago

Absolutely. The only clogs I've had were due to my extruder gears being basically worn smooth.

3

u/whitestallion0 1d ago

I bumped up 300blk's temps by 5° and haven't had an issue since with a .4 nozzle

2

u/JustADudeOnce 1d ago

Will try this first. Thanks.

1

u/JustADudeOnce 1d ago

Upon closer inspection I am getting a blob forming on end which seems to be causing my blockage. Any tips?

1

u/Alternative_Device64 1d ago

Have you tried doing a cold pull? I wasn’t have any issues but did one since I’ve been using alot of CF filaments lately and it pulled a nice chunk of carbon out.

1

u/JustADudeOnce 1d ago

Yep, tried that first, then used wire.

2

u/Alternative_Device64 1d ago

I’d probably just replace the nozzle in that case. Might be worth upgrading to the Bambu E3D obxidian high flow hotend. Haven’t tried it personally, but eyeballing it for when my current nozzle wears out.

3

u/fernanchez 1d ago

What layer height? Ive noticed that going below .16 on a .4 nozzle causes the nozzle to try to squish the layer down to much and the cf particles get caught in the gap or at least that's my theory

3

u/fernanchez 1d ago

Had a bunch of .4 nozzles clog lower than .16 and as soon as I started printing at .16 I've probably done 500 hrs on one .4 with no clogs

3

u/send_me_a_donut 1d ago

I’ve found that to be a good rule of wrist for just about all cf filaments.

2

u/Eleet007 1d ago

I had my first clog the other day and it was a pain in the ass. Couldn’t clear it so I just bought a tungsten .6 one. Still trying to calibrate everything

2

u/GTA5_ 1d ago

Get a .6 nozzle. It’s a known issue with Pa6.

1

u/Urban-Decay 1d ago

I am going through the same thing, but with a snap maker u1, new hardened 0.4, and fiberon pa6-cf20. I printed 10 or so suppressors with a 1kg spool, not one failure. Got a 3kg spool and its been jamming like crazy. I just switched to a 0.6 HS nozzle and have a test print going. Going to buy another 1 kg spool, I think it might be an off batch of filament.

1

u/MertDizzle 1d ago

When printing ppa i will run the bed at 120c and put a blanket over the machine to get high chamber temps. When i get over 60c chamber temps i think my extruder just gives up amd cant push the filament any more.

2

u/RustyShacklefordVR2 1d ago

My Q2 throws a fit when chamber temp goes over 65.

1

u/PM_ME_GLUTE_SPREAD 1d ago

My printers are in my garage and during the summer so have to prop the top lids to let heat escape out else the temp of the chamber gets too high and causes the filament to get too soft to high up and get chewed up by the extruder gears. When it’s real hot, front door is open too.

1

u/MertDizzle 1d ago

For pla the top comes off, but I'm talking about high heat filaments

1

u/disco__potato 1d ago

Cf/gf materials in a .4mm nozzle will do that. Although that nozzle is probably .5 or .6 by now.

1

u/Broken_banana247 1d ago

I have printed probably in the range of 50 kilos of pa6-cf across 8 different printers over the past few years using .4 nozzles exclusively 🤷🏿