Cracking at snap-fit hook base in SLS PA12
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Hello everyone, I’m using SLS 3D printing (PA12, 0.12 mm layer height) to create a snap-fit enclosure for a handheld sensor device. The enclosure has three internal hooks that flex about 1.5 mm during assembly and are supposed to hold a PCB securely without any fasteners. I’m seeing occasional cracking at the hook base after just 2–3 assemblies. Wall thickness around that area is 1.8 mm.
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