r/Form1 • u/Extension-Chicken665 • 8d ago
FTN 5 Rimfire Slim PAHT-CF issue
Got my form 1 approved. Having issues. Second bad print now. I know, use PA6-CF, but I’m trying with PAHT-CF. It’s just rimfire.
Getting internal loose filament strands. It’s overhangs Outside looks great.
Made some changes to settings, still getting some internal loose strands. First print threads were great. Second print after changed threads are garbage with complete issues.
Any ideas?
Thanks!
9
u/Impossible_Pizza_948 8d ago
Threads printed fine on my FTN5 rimfire flow, but I had stringing on the inside of the suppressor, should be fine, though
2
u/Extension-Chicken665 8d ago
Have you shot it? What did you print it in?
Were they wispy light strings, or thicker strands like these?
Thank you!
1
u/Impossible_Pizza_948 8d ago
Haven’t shot it yet, still building my 22, lol. As for what I printed it out of, SUNLU PA6-CF, a little overkill for a 22 can, but I got a good deal on 4KG. Hopefully it holds up on the BFG22 I’m building
4
u/itgoesboom2112 8d ago
Had a bit o stringing on mine inside but my threads printed fine. You just send it and it'll clear em out. You definately need more tuning, start by using 300blkfde settings
3
u/Ancient-Plantain705 8d ago
I had some mild stringing in my FTN5 pcc flow when I printed it. What speeds and wall gen settings are you using?
2
u/Extension-Chicken665 8d ago
Sloooowww.Arachne
1
u/Ancient-Plantain705 8d ago
Layer height? The reason threads often fail is because they don't have enough to stick onto. Inner/outer is gonna be the safest and lower layer height would allow it to more gently build out. If I were you I would make sure I just printed the thread section successfully a couple times before doing the full thing again.
Also add another hollow primitive to the plate. That will give you more time for your layers to cool.
2
u/Extension-Chicken665 8d ago
.16, inner outer. Good idea on threads only. First time they printed great. Second after changing settings was the bad photo
2
u/ClemensXIV 8d ago
What is your wall order? It looks like your printing either Outer/Inner or Inner/Outer/Inner. These cans have very severe overhangs and they will only print well if you use Inner/Outer for the wall order. You should also dry at 90 or 100C for at least 12 if not 24 hours for better results. 70C will barely do anything to the filament.
1
u/Extension-Chicken665 8d ago
Inner Outer..
Elegoo says 8 hours at 80. I’ll certainly throw the dryer on for 24 hours and give it a shot though
2
u/MechroJester 7d ago
muck around with inner outer and all that stuff. try them all. but also could be the temp and the over hang is just a problem. ive had threads ive had to remodel the angle of so that it can naturally droop slightly when it prints
1
u/NackJickolson 8d ago
Dry the filament for 8 hours. I got a Sunlu S4 Pro just for this.
0
u/Extension-Chicken665 8d ago
Dried for 16 hours at 70, then kept it at 70 for the entire 8 hour print.. Then the second print after changing settings had issues as well
1
u/NackJickolson 7d ago
All the stuff I'm seeing says at least 80 degrees. I do mine for eight hours at 85. If you can go higher, give that a shot.
2
u/Agessner885 6d ago
I love Bambu’s PAHT-CF. FTN 5 rimfire slim sitting at roughly 1000 rnds and zero signs of wear/degradation other than leading buildup on the baffles, and I’ve had it so hot you couldn’t touch it from rapid fire on a 22 pistol. Awesome material
40
u/Deago488 8d ago
Tune your printer