Here is the final version appearance effect that has been tested so far.
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This version uses magnetic door closure; apply a 1 mm-thick, 10 mm-wide strip of EVA tape to the frame. Here is 3MF：U1 TOP_COVER_for SMOrca.zip (3.4 MB)(2026-01-01)
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Top Part STP：You can modify the STP file yourself.
Top part.zip (512.6 KB)
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Door CAD :PC_Door_3pcs_CNC_3.17mm.zip (83.3 KB)
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Latest machine STP file with adjusted dimensions：
Product_TOP_COVER_2025_1227.zip (671.1 KB)
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DXF file for CNC or Laser Cut：
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Here is final result photo：
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Ventilation duct size：4inchs x 5cm
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BOM Description，Note: use fast-drying glue to secure the magnets.
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PS：I will update later when I have time: LED light installation (mounting points already reserved), small-size panel drawings, and a recommended installation tutorial.