16g 50-minute Pocket Screwdriver Bit Storage Case, Seven-in-One, Portable, Mini Screwdriver

This is a compact and portable bit holder design, specifically engineered for users working in confined spaces. The case accommodates seven 6.35mm x 25mm bits, and its ingenious lid design allows for bit storage. Incorporating anti-slip strips, it ensures secure handling even in restrictive environments, proving particularly useful for maintenance in tight areas such as sewing machine housings.

The imagery showcases a purple prototype. Updated February 18, 2025, with integrated magnetic slots and a thicker lid, reducing overall height.

Features

• Portable Design: This diminutive screwdriver holder is ideal for portability. Measuring 30mm high and 36mm in diameter, it boasts remarkable lightness and convenience.
• Material Efficiency and Rapid Printing: Utilizing approximately 15g of filament, printing time is less than 50 minutes, facilitating swift fabrication.
• Bit Storage: Designed to hold seven 6.35mm x 25mm bits, ensuring convenient access and replacement.
• Lid Design Optimized for Constrained Spaces: The lid facilitates bit storage, offering a compact design particularly suitable for confined spaces, such as maintaining sewing machines.
• Anti-Slip High-Torque Design: The lid features anti-slip strips, providing enhanced torque (36mm diameter) and improved stability.
• Integrated Magnetic Slots: The lid incorporates D=6.1mm, h=1mm magnetic slots to securely hold bits, preventing loosening and loss after repeated use.

Preview

Dimensional Preview

The bit mounting slots on the lid offer three pre-set dimensions: 6.5mm, 6.55mm, and 6.6mm. Variations in bit brands or filament may necessitate minor adjustments to the hole sizes. A 6.55mm STP file is provided; users can modify it as needed. (Consider your printer and filament characteristics when accounting for dimensional tolerances) Various patterns can also be added to the lid; I may incorporate a series of screwdriver designs in the future.

My bits measure 6.3mm. I successfully used a P1S to print with Tinmorry PETG and an A1 mini with Bing PLA—both functional (6.5mm provides a tight fit, making removal challenging; 6.55mm offers easier extraction).

To facilitate mobile printing, my configuration file provides settings for three plates: the first with 6.5mm slots, the second with 6.55mm slots, and the third with 6.6mm slots. Choose the tolerance based on your experience. When uncertain, opt for a looser fit—the magnets will secure the bits, whereas an overly tight fit may hinder removal.