Uploaded May 2026 | Updated September 2026, 2 weeks ago
This one went deeper than a normal filament test.
I tested 3D-Fuel PET-CF across different print temperatures, then compared as-printed parts against annealed parts to see what actually changes when you stop guessing and start measuring.
Does printing hotter matter?
Does annealing actually improve the part?
Does it help strength, heat resistance, inserts, threads, impact behavior, or is it just another one of those things people repeat online because it sounds right?
The results were not what I expected across every category.
In this video I break down:
285°C as-printed results
305°C as-printed results
305°C annealed results
X-axis yield load
Layer adhesion
Direct thread strength
Heat-set insert performance
Izod-style shock break testing
HDT testing
What changed, what improved, and what got worse
This is not manufacturer brochure testing. This is my comparative, real-world materials testing data using the same methods across the materials I test.
Huge thanks to Steve Builds for helping kick this PET-CF rabbit hole even deeper.
=============================
LINKS
Materials Testing Chart:
testing.eo3dlabs.com
3D-Fuel Amazon Affiliate Link:
amzn.to/4nAruf7
3D-Fuel Direct Link:
3dfuel.com
PCBWay:
pcbway.com
Steve Builds YouTube Channel:
youtube.com/@SteveBuilds
Support EDGE OF 3D on Ko-fi:
ko-fi.com/edgeof3d
=============================
STAY CONNECTED
YouTube:
youtube.com/c/EDGEOF3D
Instagram:
instagram.com/edgeof3d
TikTok:
tiktok.com/@edge_of_3d
=============================
As always, this is comparative testing, not a certified datasheet replacement. The goal is simple: same equipment, same methods, same test logic, and a better look at how these materials behave when actually printed and used.
#3DPrinting #3DFuel #PETCF #CarbonFiberFilament #FilamentTesting #3DPrintTesting #EngineeringFilament #Annealing #MaterialsTesting #EdgeOf3D
This one went deeper than a normal filament test.
I tested 3D-Fuel PET-CF across different print temperatures, then compared as-printed parts against annealed parts to see what actually changes when you stop guessing and start measuring.
Does printing hotter matter?
Does annealing actually improve the part?
Does it help strength, heat resistance, inserts, threads, impact behavior, or is it just another one of those things people repeat online because it sounds right?
The results were not what I expected across every category.
In this video I break down:
285°C as-printed results
305°C as-printed results
305°C annealed results
X-axis yield load
Layer adhesion
Direct thread strength
Heat-set insert performance
Izod-style shock break testing
HDT testing
What changed, what improved, and what got worse
This is not manufacturer brochure testing. This is my comparative, real-world materials testing data using the same methods across the materials I test.
Huge thanks to Steve Builds for helping kick this PET-CF rabbit hole even deeper.
=============================
LINKS
Materials Testing Chart:
testing.eo3dlabs.com
3D-Fuel Amazon Affiliate Link:
amzn.to/4nAruf7
3D-Fuel Direct Link:
3dfuel.com
PCBWay:
pcbway.com
Steve Builds YouTube Channel:
youtube.com/@SteveBuilds
Support EDGE OF 3D on Ko-fi:
ko-fi.com/edgeof3d
=============================
STAY CONNECTED
YouTube:
youtube.com/c/EDGEOF3D
Instagram:
instagram.com/edgeof3d
TikTok:
tiktok.com/@edge_of_3d
=============================
As always, this is comparative testing, not a certified datasheet replacement. The goal is simple: same equipment, same methods, same test logic, and a better look at how these materials behave when actually printed and used.
#3DPrinting #3DFuel #PETCF #CarbonFiberFilament #FilamentTesting #3DPrintTesting #EngineeringFilament #Annealing #MaterialsTesting #EdgeOf3D
