This model is a closable rectangular ring designed to collect and organize small samples that can be threaded directly onto a 3.5 mm diameter ring. It is a simple and practical solution for keeping filament samples, color samples, or small material test pieces together in an organized way.

The ring has a rectangular shape with rounded corners and external dimensions of 74 mm x 44 mm. This shape provides more usable space than a traditional circular ring, allowing you to store more samples while keeping them easy to browse and compare.

Thanks to the openable and closable design, you can easily add or remove samples without breaking or cutting the ring, making it ideal for sample collections that grow over time.

Great for organizing:

• 3D printing filament samples
• color sample tags
• material test pieces
• any small item with a hole compatible with a 3.5 mm ring

Features

• Rectangular shape with rounded corners
• Size: 74 mm x 44 mm
• Ring diameter: 3.5 mm
• Closable design to easily add or remove samples
• Simple, sturdy and quick to print

For best results, print in PLA, PETG, or slightly flexible materials to ensure durability and reliable opening and closing over time.