Uploaded February 2026 | Updated September 2026, 2 weeks ago
In this collaboration with Roetz 4.0, we wanted to answer a simple but important question:
How much strength do you actually lose when printing at extremely high speed?
Jan printed the test objects at very high speed, pushing the limits. I printed the same models at standard speed for Generic PLA in Bambu Studio. Then I tested everything using my usual mechanical testing methods.
The main focus of this experiment was layer adhesion, because that’s typically where high-speed printing should show weaknesses. But we also measured weight, tensile strength, impact resistance (IZOD), creep behavior, hook strength and performed multiple layer adhesion tests (4×4 mm solid inside and 10×10 mm 2-wall with 20% infill).
Are ultra-fast prints dramatically weaker?
Or with proper tuning, is the difference smaller than we expect?
Let’s find out.
Roetz 4.0 channel:
youtube.com/@Roetz40
Video about fast printing: youtube.com/watch?v=WxLIEzMJDm4
If you like this type of independent mechanical testing and comparisons, you can support my work here:
Patreon: patreon.com/mytechfun
Buy Me a Coffee: buymeacoffee.com/mytechfun
Thank you for supporting MyTechFun 🙏
Chapters
0:00 Introduction
1:15 About the test
1:56 Closer look of Roetz 4.0 objects
2:42 Preparing my test objects
3:51 Measuring the weight
4:46 Tensile test
5:21 Layer adhesion (4×4)
6:22 Hook test
6:42 Elimination s-hook test
7:00 Layer adhesion (2 walls, 20% infill)
8:29 Impact test (IZOD)
9:28 Creep test
10:07 Conclusions
#3dprinting #pla #highspeedprinting #bambulab #mechanicaltesting #layeradhesion #izod #tensiletest #creep #mytechfun
In this collaboration with Roetz 4.0, we wanted to answer a simple but important question:
How much strength do you actually lose when printing at extremely high speed?
Jan printed the test objects at very high speed, pushing the limits. I printed the same models at standard speed for Generic PLA in Bambu Studio. Then I tested everything using my usual mechanical testing methods.
The main focus of this experiment was layer adhesion, because that’s typically where high-speed printing should show weaknesses. But we also measured weight, tensile strength, impact resistance (IZOD), creep behavior, hook strength and performed multiple layer adhesion tests (4×4 mm solid inside and 10×10 mm 2-wall with 20% infill).
Are ultra-fast prints dramatically weaker?
Or with proper tuning, is the difference smaller than we expect?
Let’s find out.
Roetz 4.0 channel:
youtube.com/@Roetz40
Video about fast printing: youtube.com/watch?v=WxLIEzMJDm4
If you like this type of independent mechanical testing and comparisons, you can support my work here:
Patreon: patreon.com/mytechfun
Buy Me a Coffee: buymeacoffee.com/mytechfun
Thank you for supporting MyTechFun 🙏
Chapters
0:00 Introduction
1:15 About the test
1:56 Closer look of Roetz 4.0 objects
2:42 Preparing my test objects
3:51 Measuring the weight
4:46 Tensile test
5:21 Layer adhesion (4×4)
6:22 Hook test
6:42 Elimination s-hook test
7:00 Layer adhesion (2 walls, 20% infill)
8:29 Impact test (IZOD)
9:28 Creep test
10:07 Conclusions
#3dprinting #pla #highspeedprinting #bambulab #mechanicaltesting #layeradhesion #izod #tensiletest #creep #mytechfun
