SIRAYA Tech Fibreheart PET-CF and Prusa XL

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Kurt Gluck

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Oct 13, 2025, 1:08:03 AMOct 13

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Hi,

Looking for some advice - at 3dPrintopia I won a spool of SIRAYA Tech Fibreheart PET-CF https://siraya.tech/products/siraya-tech-fibreheart-pet-cf-filament it arrived this weekend.

So, looking at their website I see no profiles for Prusa Printers. Does anyone have any experience with this filament, hopefully with a Prusa XL? Another possibility of course is if someone more knowledgeable would like to trade me for it - I would love a spool of 3dfuel Pro PCTG.

Kurt-A

PS: I live in Central NJ if that helps figure out shipping :-)

Kurt

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Oct 13, 2025, 8:41:28 AMOct 13

to 3D Printing Tips and Tricks

Sir - I hope you have a hardened-Steel nozzle, due to the abrasiveness of a Carbon Fiber filled filament.

My suggestion - use a regular PETG type profile, may notch up the print temp by like 5 degrees - then maybe make a copy of that profile and name it PET-CG. And, I would start by must making a round disc on your printer - flat, 1 layer - then look at how that 1st layer comes out. It should give you a good starting point and initial test.