Hi there fellow Printers
I can’t seam to figure out printing with Bambu ppa-cf On a X1C. I have purchased a Polydryer and sealed boxes.. I dried it for 16 hrs as hot as I can get the poly dryer then dry another 4 or 5 hours right before printing and print with the dryer on. Ive even started using Orca Slicer so I could calibrate better Upgraded to a hardened .06 nozzle with no luck. Ive tried slowing down speed. I print with camber temp around 40 degree c. It’s like rolling the dice with this roll.
Feed issues possibly?
PPA-CF is extremely stiff, I printed a few different items to help make sure it feeds consistently - a guide to give the PTFE a smoother curve into the extruder, and then some clips to curve the PTFE tube along the e-chain more naturally.
Also just make sure your PTFE tubes themselves aren’t too worn and draggy.
jjrace:
Hi there fellow Printers
It’s fellow makers …
I have never printed this material. Is 40C hot enough for the chamber? I know that when I do ASA, I get the chamber as hot as I can, usually around 50-55C. Again, I know nothing about this material.
Other note from BBL site:
Printing Tips
Drying Recommendations:
- Drying Temperature:
In a blast drying oven: 100°C to 140°C for 8 to 12 hours.
On an X1 printer’s heatbed: 110°C to 120°C for 10 to 12 hours (less effective than a blast drying oven).
- Important Note: Higher temperatures within the drying range yield better results, but do not exceed 160°C to avoid damaging the spool.
I am sure the Polydryer does not get to anywhere near these temps. I’m lucky to get to anywhere near 50C with mine.
I haven’t printed PPA-CF on my X1. But 40°C does indeed sound a bit chilly.
For PA6-CF already, I did all I could to get as close as possible to 60°C.
Also, I am not sure how hot your drier gets. With mine maxing at 70°C, I kept my PPS-CF in there for close to 60h before printing on my Plus 4.
& 
About – Contrive Mechanical Design LLC
Ive been watching video shorts on fb from this place (Barret) it appears he is well informed and experienced with gf/cf he may be worth looking up on his media channels , i was curious to see if it was @PrinterMcgee
I have printed with it. A lot. In a standard X1C chamber, no preheating or anything special. All my prints have come out near perfect, certainly none of the defects I’m seeing here.
You’ll note that the flow calibration lines have defects - not just the print itself. That should be a good indicator that it’s not chamber temp.
Thanks for everyone’s help. I will try to dry it in a small oven I use for powder coating. and try that. I will also change the ptfe tubes. I would have thought a worn tube would be less friction butI have nothing to loose but a half roll of filament I can’t make work. I’ll try any thing.
Thanks Again JJ
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Hello thanks for the help. So I dried the roll in my little oven at 220 degrees f and have been able to print out the rest of the roll with no issues. I guess I need a hotter filament drier. I need to see what’s out here that gets that hot.
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Also before drying weigh it then dry for 8 hours or so and weigh it again. Then dry some more. Keep weighing it until it stops losing weight.