1/4" Bit Screwdriver Handle with Bit Storage

A practical screwdriver handle designed for standard 1/4" bits. Simple, functional, and easy to print — no AMS required.

Features:

• 1/4" magnetic bit holder
  Designed for a 3 × 10 mm magnet to keep the bit securely in place.
• Internal storage for 7 bits inside the handle (snap fit)
  • The center slot can hold a longer bit or an extension.
• Comfortable handle shape for everyday use.

Model Parts:

The model consists of 3 parts:

1. Rear cap with storage for 7 bits
2. Screwdriver body (handle)
3. Threaded front tip with 1/4" bit socket

Assembly Instructions:

1. Insert a 3 × 10 mm magnet into the front tip.
2. Apply a small amount of cyanoacrylate (CA) glue into the smaller internal thread of the screwdriver body.
3. Screw the front tip into the body and tighten securely.

Assembly Note:
Glue is recommended. Without it, higher torque may cause the front tip to loosen when tightening screws.

Compatibility Note:
The design has been tested with a variety of 1/4" bits from different sets, ensuring good compatibility and fit. This is demonstrated in the GIF.

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🛠️Before You Start Printing

Before printing, give the bed a quick clean 🧽 — good adhesion = better first layer and accurate geometry.

Use dry filament (wet filament loves to pop, string, and ruin dimensions).

When using my MakerWorld profiles, make sure the selected material matches what you’re actually printing. Different materials shrink and behave differently — the wrong profile can mean wrong dimensions.

Also, my STL files are designed and dimensioned for PLA. If you print them in PETG, you may need to slightly rescale the model to compensate for different shrinkage.

Clean bed. Dry filament. Correct material. Done 😄