If the hotend isn’t clogged, and the extruder isn’t jammed, why would the printer not be extruding filament?
Using standard pa cf presets that came with the machine, with bambu lab pa cf filament
But prints fail within 20 mins and stops extruding
Only thing I can think of is the extruder won’t work but I took it apart and there’s nothing wrong with it
Could really use some help here since bambu support doesn’t seem to be any help
In my personal experience, the PA CF Bambu supplies in the box will regularly clog a .4 nozzle. I think they’ve actually done themselves a disservice by including it as they even recommend a .6 on their product page.
Cold pull, or better yet remove the nozzle, take off the fan, heater thermister etc, and do a good burn out / pull of the original - you’ll see the fibres come out. I used a little torch to heat the nozzle and used plain nylon to manually cold pull.
I love being able to print the PA CF stuff but from now on I will be following their advice and using a .6
I must’ve missed the recommendation to use the .6 nozzle, you have a link to where they have discussed this more?
I’ve been using the Bambu PA-CF for like 2 weeks now and just had my first clog yesterday. More prone to blame my shoddy slicer settings and experiments/ failures with my X1C than the nozzle. I have abused it a little…
Hotend swap out was silly easy though (and extruder also, even for somebody like me who could find their tweezers…)
Yeah pretty easy to swap out the hotend, I haven’t tackled the extruder yet 
The .6 recommendation is in their printing tips on the store page for the filament. Searching around various forums, others have also been reporting bad clogs with the supplied PA-CF and the .4 nozzle.
You did well to do two weeks worth of printing! I got my first clog within a few hours of printing with the supplied PA-CF.
My .6 nozzle arrived a few days ago but I haven’t tried doing any printing with it yet.
What’s the use case for PA-CF? Is it stronger in any measure than say, PC or ASA or PLA+ which seems the strongest?
I’d be curious to see some real numbers on thar also. I always assumed it cane out a little stronger and lighter, at least in certain instances.
@KikoLobo Just a couple resources on the topic.
Well I bought a .6 and a roll of their bambu pa cf. guess what? It fucking clogged my nozzle so bad I couldn’t recover it. It was fucked. First print too. Customer service with this company is absolute dog ■■■■
Probably why they stopped shipping it and only ship PLA.
PA-CF is in stock in the EU, UK, AU, CA, and global stores. So it must only be Americans they won’t sell it to because they don’t know how to print it…
No, I mean shipping it with new printers. You no longer get PLA/PA-CF/SUPPORTW, you only get 3xPLA.
I had not noticed that, although the store currently says 3 x 250g filaments, type may vary. Are people not getting support W either?
Maybe I’m just lucky? I printed for weeks with more or less stock settings with the Bambu PA-CF and the .4mm nozzle with only one clog.
You can still get PA-CF/Support W, but it varies order to order based on their stock. You can just get 3xPLA. There is no guarantee you will get Support or PA-CF anymore.
The only thing I can think of is restrictions at or on the way to the spool, seems like you would get debris from filament grinding but not sure with the PA-CF. I tried the small spool that shipped with the AMS with excellent results. I used the .4 nozzle (wasn’t aware of the .6 recommendation) but my (2) prints were only about 50 grams each. First time printing something that hot at home. I can say that I had some goofy stuff happen which lead me to disassemble the extruder, but this was with PLA and the only time I didn’t use the AMS.
I just received my printer on January 5th in Canada and it came with PLA, Support W and the carbon fiber.
Wondering if you dried it prior to use?