PA-CF frustrations

Bambu Lab X1 Series
1

Hi Guys,

I have an x1 Carbon with AMS. Love the printer with a major “but…” I cannot get it to do long prints with PA-CF. I have tried replacing cleaning the extruder, replaced the whole extruder twice, have replaced the nozzle, complete hotend twice, tried various nozzles, etc but keep getting clogs that lead to air printing.

My question: Is anyone able to consistently do 12 hour plus prints with Bambu’s PA-CF? If so, please let me know your nozzle, speed adjustments temp adjustments and any other steps that may help. This kind of 85% complete print is driving me CRAZY (not a long drive)!

Console|668x500

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Are you using the 0.6mm nozzle as recommended?

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Hi, I am now. I started with the .4 and then thought that may be the issue so I have tried the .6 but not the .8 yet. Have you had successful long prints with the .6? If so could you share settings? Thanks

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Preheat chamber to 40 C and engineering plate and stock generic settings for OACF.

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5

Hi Shelton, What nozzle are you using? What is the longest print duration you have been able to achieve? Thanks

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I only used the 250g spool that came with the printer for testing. Ordered Polymaker and ran a few jobs around 6-8 hours with the .4mm nozzle. No issues.

I will be recieving a spool of BBL PAHTCF this Friday and have a couple prints over 12 hours so I guess I’ll have to wait and see if i have the same issue.

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What happens when it fails? Looked at the picture and frankly couldn’t make out the issue =(

Can you post the time lapse for the failed print(s)?

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I switch from 0.4 to 0.6 after the first clog. No after 2 months no issues.

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9

What layer heights are you using? What is the longest print duration you have been able to achieve? Thanks

10

It just starts air printing. In the image I posted you can see that the print is incomplete with a clean stop. The print completes and claims success :). Thanks

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Weird. I’ve got 3 X1Cs and some PA-CF filament. I’d be willing to test print it if you can share the file. I’ve also got all 4 nozzles (0.2, 0.4, 0.6 and 0.8). Not sure which one you are using, etc., but I should be able match your configuration…

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Very interested to hear what layer heights you have all been using with PA CF and the .6 nozzle. Thanks

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I got the same issue with PLA CF. I solved the problem by pausing after long prints and manualy extruse bambu white pla filament after that with a cold pull i load the cf and its fine since then. i printed the whole PEG Case in CF without any problems. if you get a dry print use a needle and clean by white pla.
i hope i help you with this information.

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I’m curious if anyone has found reliable settings yet for printing with Bambu’s PA-CF on the X1C?

I’m working through most of the tips (pre-heat, glue, slower speeds, etc) but having a bear of time getting any PA-CF print to not lift/warp from the bed after about 3 layers.

I had hoped Bambu’s printing profiles for its own PA-CF material would be well tuned (as they have been generally for PLA, PETG, ABS), but proving to not be the case…

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For big nylon parts get you a sheet of layerlock garolite you can cut it to size also.

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Interesting. Do you have any recommendations for attaching LayerLock Garolite sheets to an X1/X1C? Do you…glue it to an engineering plate? Not sure what adhesive to use since PA-CF drives a lot of heat through the bed.

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You can get another flex / plate or remove the cool plate sticker and add the Garolite sheet and most come with the high temp 3m adhesive liner.

Garolite Build Plate

Matterhackers

3dmakerengineering

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Thanks, @3DTech! Appreciate the links.

Have you used this approach with the Bambu machines? Do you get consistent results with PA-CF? Any other profile adjustments you’ve made with the Garolite to get good results?

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I have not done a big nylon CF parts on the X1 yet only on my Raise3d printers and the trick was using the Garolite bed plate for big parts or they would warp up.

The only nylon I have done on the X1 is Taulman Nylon 680 medical grade and I used the WhamBam flex plate with Magigoo Pro PA glue but it was a small part but it worked out perfect.

But yes if I do a big nylon part on the Bambu Lab it will be on Garolite :slight_smile: I already have a sheet I just need to install it on the engineering cool plate side is the plan.

Another pa glue that I like is vision miner over the Magigoo pa glue but both will work.

BUILD PLATE GLUE

Nylon is like a rubber band and when it cools it wants to pull so you need a strong bond to the bed plate or it will warp up on you.

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PREORDER - Ships by 7/5/23 - Magnetic Garolite/G-10 Composite Build Pl – Lightyear 3D Looks like it could be good. I pre-ordered one.