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REF: Talk Manufacturing | Hubs

You have always been able to use 3rd party materials without voiding your warranty. It is and has been illegal for Zortrax to void your warranty if you use third party materials in the US since their inception.

https://en.wikipedia.org/wiki/Magnuson–Moss\_Warranty\_Act
“Warrantors cannot require that only branded parts be used with the product in order to retain the warranty.[7] This is commonly referred to as the “tie-in sales” provisions,[8] and is frequently mentioned in the context of third-party computer parts, such as memory and hard drives.”

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