3M Head Harness Assembly 7581, System Component Replacement v2 (ORIGINAL DESIGN)
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Respirator harness broke and 3M wanted US$81.75 for a set of 5. This is my own design and it works well for me.
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- Printables
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- Medical Tools
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- Creative Commons — Attribution — Share Alike
2026-11-02 update. STEP file uploaded. Minor improvements made to thickness of the catches so that they fit better, and also the thickness has been increased slightly to make it more durable. Strap radiuses increased to make it more comfortable to wear.
Respirator harness broke and 3M wanted US$81.75 for a set of 5. This is my own design and it works well for me. Use at your own risk, no warranty is implied or provided.
Printed at 0.2mm layer height with a 0.4mm nozzle. Material: polypropylene