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Winter.K,
Ben006 is utilizing SLS (selective laser sintering) of nylon powder which results in a very durable thermoplastic part rather than SLA (most typically is a UV laser cured photopolymer liquid) which results in brittle non-thermally stable part.
In my opinion, SLS nylon is an ideal material/technology for prototyping and/or short production runs of this type of part. FDM ABS would be difficult to build without support structure (extensive post build processing) and would be weak and not thermally stable in an under hood environment
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