90° and 45° Cutting and Marking Square

This project stems from the need for a handy, precise, and robust tool to check 90° and 45° angles, particularly when creating architectural models or working on crafts that demand high accuracy.

The design is inspired by a steel square I've used for years, but it's been optimized for 3D printing and made customizable to suit various materials and uses. It's perfect for:

• cutting cardboard or other sheet materials precisely;
• drawing guidelines at 90° or 45°;
• acting as a stop to ensure correct alignment;
• use in modeling workshops, DIY, hobbies, architecture, and design.

You can easily hold the material against the edge and use the square as a guide for clean, sharp cuts.