Dual-Size Hex Bit Holder with Two Screw Staging Trays

A compact desktop staging station for small repairs: six loose-fit 1/4-inch hex bits, six 4 mm precision bits and two separate screw pockets. Bits are stored vertically without spring clips or magnets.

FEATURES AND USE

Six pockets with 6.75 mm across-flats openings and six with 4.40 mm openings. Pocket depth: 15.6 mm; floor: 2.4 mm. Two front pockets separate small hardware. Size: 110 × 68 × 18 mm. One printed part.

Place bits shank-first into the matching row. Measure bits, including enlarged shoulders, before printing. This is a desktop holder; bits are not retained for travel.

PRINT

PLA, 0.4 mm nozzle, 0.2 mm layers, 15% infill, 3 walls, 4 top/bottom layers. Print flat as supplied; designed without supports in this orientation.

Estimated filament: 49.5 g (rough range 39.6–59.3 g). Estimated time: 3 h 20 min (rough range 2 h 15 min–5 h 45 min). These are analytical estimates, not slicer results or a measured print. Select your actual printer and filament profile.

FILES

STL, editable STEP solids, parametric CadQuery 2.7 Python source and geometry-only 3MF. The 3MF contains no G-code or printer settings and is not a validated print profile.

VALIDATION AND DISCLOSURE

AI-assisted original CAD design. Closed manifold mesh, consistent winding, STEP re-import, millimetre dimensions, print orientation and 3MF geometry round trip checked in software. Physical printing, fit, strength and daily use have not been tested. Images are renders of the actual supplied geometry, not photos of a print. No comparison with another physical print is claimed.

License: CC BY 4.0.