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PETG shatters more? Are you guys using colored PETG? Pure (transparent) PETG will buckle before it shatters, and is much stronger than PLA for me.
by StavrosK 6y ago
PETG shatters more? Are you guys using colored PETG? Pure (transparent) PETG will buckle before it shatters, and is much stronger than PLA for me.
- tonyarkles 6y agoEven coloured PETG has been amazingly shatter resistant for me? I took a bad print and stuck it in a bench vice. It was long and skinny (maybe 3-4mm thick before the print failed), and it literally bent itself in half and did not snap.
- StavrosK 6y agoIt depends, pigment changes its properties. White Spektrum PETG tended to shatter a bit too easily for me (though still not more easily than PLA, I think).
- tonyarkles 6y agoHuh! Good to know! This was D3D in green. The only thing that's managed to break it so far is a drone clipping the ground with its landing gear at 40km/h, and the 3D printed piece was the perfect "weak link" to prevent a more catastrophic failure :)
- StavrosK 6y agoOh yes, engineering intentional weak links is an art of its own, when you don't want the more expensive components to break.
- tonyarkles 6y agoThe joke in engineering school was: "You may choose to design a specific weak link into your design; if you do not do so, one will be provided for you."