Prusament PP-CF vs PP-GF Tested – Carbon Fiber or Glass Fiber Polypropylene?

In this video, I test and directly compare Prusament PP-CF and PP-GF filaments. Both are polypropylene-based materials, reinforced either with carbon fiber or glass fiber, but their behavior during printing and under mechanical load is very different. I look at printability, fiber structure under the microscope 🔬, warping and shrinkage, and a full set of mechanical tests. The goal is simple: carbon fiber or glass fiber – which makes more sense for real 3D printed parts? Product links (not affiliate): 🔗 Prusament PP-CF (Carbon Fiber Reinforced Polypropylene) https://www.prusa3d.com/product/prusa... 🔗 Prusament PP-GF (Glass Fiber Reinforced Polypropylene) https://www.prusa3d.com/product/prusa... 🔗 PP Sheet: https://www.prusa3d.com/product/pp-po... ❤️ Support my work on Patreon:   / mytechfun   Patreon supporters get early access to videos and access to my comparison spreadsheet, where all tested filaments are evaluated using the same test methods, making it easier to compare results across materials. Mentioned in the video ▶️ DIY Core filament video:    • 3D Printed DIY Core Filament: Testing the ...   ▶️ Filament bending tester: https://www.printables.com/model/1272... ▶️ Buckle: https://www.printables.com/model/9136... ▶️ Clip: https://www.printables.com/model/1642... Chapters 0:00 Introduction 0:45 Specifications 3:10 Unboxing 4:09 Filament brittleness 5:00 Under the microscope 🔬 6:22 Replacing the nozzle 🔧 6:50 Temperature tower 🌡️ 7:55 PP-CF slicer settings 8:05 PP-CF 3D printing 8:41 PP-GF slicer settings 8:58 PP-GF 3D printing 9:43 Practical applications 10:04 PP sheet 10:46 Shrinking 📐 11:19 Tensile testing 11:47 Layer adhesion 12:25 Shear test 12:53 Torsion test 13:35 Bending test 14:24 Impact test 15:20 Creep test ⏳ 16:41 Temperature test 🌡️ 17:37 All results 📊 18:07 Conclusions #Prusament #Polypropylene #PPCF #PPGF #CarbonFiber #GlassFiber #3DPrinting #EngineeringMaterials #FilamentTest #MechanicalTesting #MyTechFun