StackFlow Modular Desk Organizer is a fully stackable, customizable paper tray system designed to keep any workspace clean and efficient.
Each module slides into place with a stable interlocking design, allowing you to build your tower exactly the way you prefer — mix colors, rotate trays, or add only the units you need.

The curved open-front design gives you quick access to documents, notebooks, letters, and tools, while the optional top module includes pen holders and a flat tray for everyday accessories.
You can also apply labels on the side for instant identification (e.g., To Do, Pending, Invoices, Projects).

I’ve also added two STEP models so you can customize the module however you prefer.

Recommended print settings:

• Material: PLA / PETG
• Layer height: 0.24 mm
• Walls: 2 perimeters
• Infill: 15% (Adaptive Cubic)
• Top/Bottom layers: 4–3
• Supports: Not required
• Build plate adhesion: None or brim if needed

-- PRINTING PROBLEMS --

I know how frustrating it can be to have problems during a print, and I’m happy to receive constructive criticism or suggestions about the model, but please always calibrate the flow and if you have adhesion problems, try using the brim or a gripper. All these fails are not due to the model. 
All my files are tested before being published and the print profile with which I succeed is the one I publish. 
Thank you very much for your understanding and happy printing to everyone!