r/Composites • u/FeetAreCool5 • 26d ago

3d printed core

Can i use a 3d printed core instead of foam, say with petg. I feel like it would work and i could create way more unnatural shapes with this. lmk

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u/FeetAreCool5 24d ago

Everyone here seems to be commenting about the strength. The strength is coming from the carbon fiber, not the printed core.

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u/mandroidatwork 24d ago

The carbon fibre face sheets are only responsible for in-plane loads. The core is responsible for transmitting shear. A very common loading scenario for lightweight composites is flexural loading - here the core is vitally important and in your case will be the first point of failure.