This Center Finder Square is a simple and precise tool designed to quickly find the center of circular objects such as sanding discs, wooden dowels, round plates, or any cylindrical part.

The design combines:

• Two perpendicular rulers (90°) for stable alignment
• A 45° bar with an integrated pen channel, allowing you to draw accurate radius lines

🔧 How it works

1. Place the square against the circular object
2. Draw a first radius using the 45° pen guide
3. Rotate the object and draw a second radius
4. The intersection of the two lines marks the exact center

This method is fast, repeatable, and does not require calipers or complex measuring tools.

✅ Features

• Designed for easy 3D printing
• Built-in pen channel for clean and precise lines
• Ideal for workshop, DIY, and maker projects
• Perfect for sanding discs, woodworking, and general shop use

If you find this tool useful, download it, print it, and consider leaving a like or a boost to support my work! 🚀