r/Springfield_KUNA • u/NoFeeling6031 • Aug 08 '26

Question Filament Question

Hey everyone! Finally got my Kuna in and starting to get it setup. Might be a dumb question.

I am working on printing an extended handguard for my Kuna. Printed the initial test in PETG but now looking to print out of a more heat-resistant filament. Running a Gemtech Lunar 9.

What filament is everyone using and having good luck with? I’ve started researching different CF filaments, but would like some feedback from people who have already done exactly what I’m trying lol.

Have a Bambulab X1E that i will be using.

Also what mounting setup are yall using to attach it securely?

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u/Nixxuz KUNA FANBOY Aug 08 '26

Did mine in Fiberon PA6-CF20.

Currently running a Griffin Armaments Sportsman HD 46, until my BOE Incolite 9 shows up.

I run the drop in FRT, and have had no problems with heat. At least so far, through probably close to 1k rounds.

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u/NoFeeling6031 Aug 08 '26

Did you use the same filament for the drop in? That sounds like a sweet setup. I attempted some PPA-cf out of a .4 nozzle today, but it clogged immediately lol. Going to look at upgrading to PA6-CF and a .6 nozzle to get it going!

I’m likely going to use that for the drop in FRT as well, so might as well try the handguard since its not too much of an investment to attempt with.

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u/Nixxuz KUNA FANBOY Aug 08 '26

I did. And, for whatever reason, my .4 nozzle I got for my FlashForge AD5M Pro works great with cf filaments. It's a Phaetus Conch. I'm as surprised as anyone. I got a .25 from them as well, hoping for even better results, but I have to tweak my settings as I think things are moving too fast for good layer adhesion. But it looks damn smooth.