A simple parametric generator for creating transition adapters between a circular and square shape.

It can be useful in many situations — PC airflow projects, ducting, workshop setups, drainage systems, custom enclosures, vacuum cleaner adapters, and probably plenty of things I haven’t even thought of yet.

The idea for this project came from repeatedly seeing people online needing this exact kind of adapter… but always in a slightly different size.
So instead of making one fixed model, I decided to make a generator that lets you create your own version more easily.

This is my first generator-based project, so please be understanding if something could still be improved 🙂
I mainly wanted to make a practical tool that helps solve a surprisingly common problem.

🧾 Features

• Parametric size generation
• Circle ↔ square transition
• Easy to customize for different dimensions
• Suitable for many DIY and functional projects
• Designed with FDM printing in mind

🖨️ Printing notes

Depending on the dimensions and transition angle, some versions may require supports.
For best results, print in the orientation provided by the generator.