70×45×10.25 mm Sliding-Lid Enclosure with USB-C Cutouts
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Description
What it's for
A sleek-modern two-part enclosure for a small electronics board. The body has two USB-C openings on one short end so the ports can be reached with the lid in place. The lid slides into grooves along the long walls and is stopped by the closed end; three grip ridges at the pull end help you slide it open. Four corner bosses inside give a PCB something to screw down to, and no screws are needed to close the lid. The body and lid print as two separate pieces.
Dimensions
- Body: 70 × 45 × 10.3 mm as laid out; 1 mm walls; vertical corners rounded at 2 mm; top and bottom edges square.
- Lid: 68.7 × 41.8 × 1.5 mm, with 0.2 mm clearance in the side grooves and three shallow grip ridges.
- Assembled height: 10.25 mm.
- USB-C cutouts: two rounded 9 × 3.2 mm plain slots on the short end, with a 3 mm gap between them (centres 12 mm apart, ±6 mm from the middle); the slots sit 2.8 mm above the inside floor.
- Screw bosses: four at the corners, 6 mm across with 2.6 mm holes for M3 self-tapping screws, 4.75 mm tall and stopping 3 mm below the rim.
Compatibility
Designed around an ESP32-S3 N16R8 board, but the corner bosses use a generic 6 mm / 2.6 mm layout and may not match that board's mounting holes. The USB-C slots sit low, while the bosses hold a board above the floor, so the slots line up only with a board resting directly on the floor. Check the board's hole spacing and port height before printing.
Print notes
Print the body with the open side facing up so the bosses and inner groove come out clean. Print the lid flat beside the body. Because the sliding fit is not verified in practice, print the lid first and check it in the grooves before committing to the body.
Remix ideas
- Fit the boss positions and USB slot height to an exact ESP32-S3 N16R8 board layout.
- Add screw holes or a latch if the lid should be held more securely than by sliding friction.
- Resize the boss holes for M2.5 screws or heat-set inserts.
- Move or widen the cutouts for a different connector layout, or add a third opening on another face.
- Cut a vent grille into the lid for boards that run warm.
Images
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