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I can highly recommend "Failure is not an Option" by Gene Kranz!

ColorFabb released 2 new light weight materials based on TPU and PLA. These materials use a blowing agent to create microscopic bubbles in the material during printing and therefore can lower the density by almost 60%. I tested the printability and strength of the LW-PLA at different levels of foaming to see for which applications it might be usable.
The material is available in black and white and sells for $45 a roll.

Test samples and methods:   / filament-test-16238656  
Write-up and graphs: https://www.cnckitchen.com/blog/color...

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📚Further information:
Eclipson Airplanes: https://www.eclipson-airplanes.com/
RichRap Blog: https://richrap.blogspot.com/
ColorFabb Learning: https://learn.colorfabb.com/lw-pla/
Lattice Scaling Law paper: https://www.researchgate.net/profile/...
3D printed plane from LW-PLA:    • Test PLA LW (colorFabb) and 3D print ...  

🖨 Printed models:
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Buddy (may he rest in peace): https://www.prusaprinters.org/prints/...
Apollo Astronaut: https://www.thingiverse.com/thing:230305
Me 109: https://3dlabprint.com/

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🎥 Related videos:
Comparing PLA, PETG and ASA:    • The BEST 3D printing material? Compar...  
Which is the stiffest material:    • Which is the MOST RIGID 3D printing m...  
What's touch PLA:    • What is TOUGH PLA?! Testing AzureFilm...  
3D printed plane:    • HOW TO 3D PRINT your own RC AIRPLANE  

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