Uploaded December 2025 | Updated September 2026, 2 weeks ago
In this video, I test Polymaker PPS-GF20 filament, a high-temperature, glass-fiber-reinforced engineering material.
Besides the mechanical properties, many viewers are especially curious about one thing: does it still sound like metal?
I go through printing behavior, shrinkage, brittleness, slicer settings, and a full set of mechanical tests including tensile, shear, torsion, creep, impact, and temperature resistance.
All results are generated using the same test methodology I use across the channel, so they can be directly compared with other materials I’ve tested earlier.
Product link
Polymaker PPS-GF20 filament:
👉 us.polymaker.com/products/fiberon-pps-gf20?variant=44705061961785&aff=49&utm_source=affiliately&utm_campaign=aff
Support my work / Patreon
If you like my work and want to support the channel, you can join me on Patreon.
Patreon supporters get early access to videos and access to a comparison spreadsheet that includes all my previous test results, making it easy to compare materials using the same testing method.
👉 patreon.com/mytechfun
Or you can also support me via Buy Me a Coffee:
👉 buymeacoffee.com/mytechfun
Thank you for the support!
Mentioned in the video
• Polymaker PPS-GF10 filament test
youtu.be/_G2l_tpFvNY
Chapters
0:00 Introduction
0:43 Specifications
2:10 Unboxing
2:46 Filament brittleness
3:16 Temperature tower
4:17 Slicer settings
4:33 3D printing
4:49 Shrinking
4:57 Practical applications
5:55 Sounds like a metal?
6:21 Tensile test
6:49 Layer adhesion
7:11 Shear test
7:41 Torsion test
8:14 Creep test
9:09 Temperature test
9:43 Bending test
10:10 Impact test
11:16 All results
11:58 Conclusions
#Polymaker #PPS #PPSGF20 #GlassFiber #EngineeringFilament #HighTemperature #3DPrinting #3DPrinterFilament #MechanicalTesting #MaterialTest #SoundsLikeMetal
In this video, I test Polymaker PPS-GF20 filament, a high-temperature, glass-fiber-reinforced engineering material.
Besides the mechanical properties, many viewers are especially curious about one thing: does it still sound like metal?
I go through printing behavior, shrinkage, brittleness, slicer settings, and a full set of mechanical tests including tensile, shear, torsion, creep, impact, and temperature resistance.
All results are generated using the same test methodology I use across the channel, so they can be directly compared with other materials I’ve tested earlier.
Product link
Polymaker PPS-GF20 filament:
👉 us.polymaker.com/products/fiberon-pps-gf20?variant=44705061961785&aff=49&utm_source=affiliately&utm_campaign=aff
Support my work / Patreon
If you like my work and want to support the channel, you can join me on Patreon.
Patreon supporters get early access to videos and access to a comparison spreadsheet that includes all my previous test results, making it easy to compare materials using the same testing method.
👉 patreon.com/mytechfun
Or you can also support me via Buy Me a Coffee:
👉 buymeacoffee.com/mytechfun
Thank you for the support!
Mentioned in the video
• Polymaker PPS-GF10 filament test
youtu.be/_G2l_tpFvNY
Chapters
0:00 Introduction
0:43 Specifications
2:10 Unboxing
2:46 Filament brittleness
3:16 Temperature tower
4:17 Slicer settings
4:33 3D printing
4:49 Shrinking
4:57 Practical applications
5:55 Sounds like a metal?
6:21 Tensile test
6:49 Layer adhesion
7:11 Shear test
7:41 Torsion test
8:14 Creep test
9:09 Temperature test
9:43 Bending test
10:10 Impact test
11:16 All results
11:58 Conclusions
#Polymaker #PPS #PPSGF20 #GlassFiber #EngineeringFilament #HighTemperature #3DPrinting #3DPrinterFilament #MechanicalTesting #MaterialTest #SoundsLikeMetal
