Precision Adjustable Spring Maker – Compact, Accurate, and Fully Customizable For Small Rectangular Springs

This precision spring maker was designed in Fusion to give makers a reliable, repeatable, and easy-to-build solution for producing custom springs using common materials and hardware. It’s ideal for prototyping, repairs, and small mechanical projects where consistent spring geometry matters.

The tool is capable of forming springs with outer diameters ranging from 5.5 mm to 16.2 mm, giving you flexibility across a wide range of applications. A key feature of this design is the user-defined angle system. The bending angle can be adjusted to your preference and then locked in place with an integrated screw, allowing the tool to produce a clean, crisp 90-degree bend every time once set. This eliminates inconsistency and guesswork during spring forming.

To improve usability and accuracy, the spring maker includes several integrated features:

• A built-in wire straightener to prepare wire before forming
• A wire guide and clamp to keep the wire aligned and controlled
• A dedicated wire bender assembly that provides smooth, repeatable bends

The bender mechanism is intentionally designed around readily available hardware, making the tool affordable and accessible to build. The assembly uses:

• M2 screws
• #6-32 x 3-inch round combo machine screws with nuts, available at most hardware stores

For smooth operation and durability, the design incorporates 6 standard skateboard bearings, which are inexpensive, easy to source, and widely available online.

Supported Wire

This spring maker is optimized for:

• Precision Brand Music Wire – 0.024" diameter (available on Amazon)

This wire size provides an excellent balance of strength, consistency, and flexibility for producing small, high-quality springs.

Assembly Information

Assembly is straightforward and largely self-explanatory by following the photos included in the listing, which clearly show part orientation and hardware placement. One dedicated image specifically explains the required arm assembly sequence, which is important to follow for proper operation and smooth bending performance.

All hardware is standard, no specialized tools are required, and the design was created with ease of assembly in mind.

Why This Tool

• Adjustable spring diameters from 5.5 mm to 16.2 mm
• Locked angle system for consistent, repeatable bends
• Integrated wire straightener for improved results
• Uses common, affordable hardware
• Compact, workshop-friendly design
• Ideal for makers, hobbyists, and prototyping work

If you need consistent, custom springs without relying on hard-to-find commercial options, this spring maker gives you control, precision, and repeatability in a simple, printable tool.