Uploaded May 2026 | Updated September 2026, 2 weeks ago
Are carbon fiber and glass fiber reinforced PCTG filaments actually stronger than regular PCTG? In this video, I test 3D Fuel Pro PCTG-CF and Pro PCTG-GF and compare them with standard PCTG results from my earlier testing.
Both filaments are made in the USA and designed as reinforced engineering materials, but do carbon fibers or glass fibers make the bigger difference? I tested tensile strength, layer adhesion, impact resistance, creep, temperature resistance, dimensional accuracy, and much more to see how they really perform in practical 3D printing.
The goal is simple: find out whether these reinforced PCTG filaments are worth using instead of regular PCTG, and where each material performs best.
Products shown in this video (not affiliate links):
3D Fuel Pro PCTG-CF: 3dfuel.com/products/pro-pctg-cf10-carbon-fiber-1-75mm
3D Fuel Pro PCTG-GF: 3dfuel.com/collections/glass-fiber-pro-pctg
👍 Support the channel:
Patreon: patreon.com/mytechfun
Buy Me a Coffee: buymeacoffee.com/mytechfun
Patreon supporters get access to a spreadsheet with all my filament test results, making it easy to compare materials tested using the same methodology across hundreds of filaments.
Mentioned in the video:
Tested objects (free download): printables.com/model/465670-mytechfun-test-objects
Spring clip: printables.com/model/933621-spring-clip-wave/files
Earlier PCTG vs PETG video: youtu.be/bxJSzkuclxk?si=BPWQNNyTJAe-5FsD
Chapters:
0:00 Introduction
1:19 Specifications
2:15 Unboxing
2:39 Filament brittleness
3:45 Weight
4:13 Preparing for 3D printing
5:00 Slicer settings
5:25 3D printing
6:17 Dimensional accuracy
6:28 Tensile test
6:47 Layer adhesion test
7:29 Shear test
7:54 Torsion test
8:24 Bending test
8:54 Second bending test
9:39 Impact test
10:26 Creep test
11:26 Temperature test
11:55 All results
12:35 Conclusions
#3dprinting #filament #pctg #carbonfiber #glassfiber #engineeringfilament #3dfuel #madeinusa #materialtesting #mytechfun
Are carbon fiber and glass fiber reinforced PCTG filaments actually stronger than regular PCTG? In this video, I test 3D Fuel Pro PCTG-CF and Pro PCTG-GF and compare them with standard PCTG results from my earlier testing.
Both filaments are made in the USA and designed as reinforced engineering materials, but do carbon fibers or glass fibers make the bigger difference? I tested tensile strength, layer adhesion, impact resistance, creep, temperature resistance, dimensional accuracy, and much more to see how they really perform in practical 3D printing.
The goal is simple: find out whether these reinforced PCTG filaments are worth using instead of regular PCTG, and where each material performs best.
Products shown in this video (not affiliate links):
3D Fuel Pro PCTG-CF: 3dfuel.com/products/pro-pctg-cf10-carbon-fiber-1-75mm
3D Fuel Pro PCTG-GF: 3dfuel.com/collections/glass-fiber-pro-pctg
👍 Support the channel:
Patreon: patreon.com/mytechfun
Buy Me a Coffee: buymeacoffee.com/mytechfun
Patreon supporters get access to a spreadsheet with all my filament test results, making it easy to compare materials tested using the same methodology across hundreds of filaments.
Mentioned in the video:
Tested objects (free download): printables.com/model/465670-mytechfun-test-objects
Spring clip: printables.com/model/933621-spring-clip-wave/files
Earlier PCTG vs PETG video: youtu.be/bxJSzkuclxk?si=BPWQNNyTJAe-5FsD
Chapters:
0:00 Introduction
1:19 Specifications
2:15 Unboxing
2:39 Filament brittleness
3:45 Weight
4:13 Preparing for 3D printing
5:00 Slicer settings
5:25 3D printing
6:17 Dimensional accuracy
6:28 Tensile test
6:47 Layer adhesion test
7:29 Shear test
7:54 Torsion test
8:24 Bending test
8:54 Second bending test
9:39 Impact test
10:26 Creep test
11:26 Temperature test
11:55 All results
12:35 Conclusions
#3dprinting #filament #pctg #carbonfiber #glassfiber #engineeringfilament #3dfuel #madeinusa #materialtesting #mytechfun
