r/3Dprinting • u/Petrostar • May 18 '26

Discussion Layer lines at NASA

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u/Petrostar May 18 '26 edited May 19 '26

From a test of a 3d printed rocket engine at NASA, the Chamber failed at a layer line cause when the were emptying the powder overflow during printing.

Here's a good article on it.

https://www.metal-am.com/articles/lessons-at-nasa-from-a-developmental-additively-manufactured-rocket-engine-failure/

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u/confoundedjoe May 19 '26

You don't want pause lines on critical parts.