Modular A4 Binder
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A fully modular A4 binder designed for 3D printing on compact printers. Easy to assemble, repair, customize and expand.
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Model information
- Source
- Printables
- Category
- Office
- License
- Creative Commons — Attribution — Noncommercial
Modular A4 Binder – Designed for the Prusa MINI
Description
This is a fully modular A4 binder designed for 3D printing on compact printers.
The binder is divided into 15 main modules, allowing every individual part to fit within the build volume of a Prusa MINI. The modules are assembled using 16 connectors, creating a full-size A4 binder without requiring a large-format 3D printer.
The design is modular, repairable and easy to assemble. Individual components can be replaced if damaged, without having to print the entire binder again. The object that holds the sheets is my compressor bar, you can find it in my profile.
Features
A4 format
15 main modular parts
14 recommended triangular connectors
4-ring system
Removable sheet-retaining mechanism
Integrated pen holder
Modular and repairable construction
Every part fits within the Prusa MINI build volume
Assembly without glue
No-supports
Printing Information
Recommended material: PETG or ABS
Total material: approximately 368 g
Total printing time: approximately 13 h 49 min
Main modules: 15
Triangular connectors: 14
Double connector: 2
- Printed at 0,3mm layer, 20% infill and 4 walls -
Ring-closing pieces: 4
Hinge-closing pieces: 4
- Printed at 0,1mm -
Filament required for assembly: 2 × 33.17 cm of 1.75 mm
Total components: 39
Printing time and material consumption may vary depending on printer, filament and slicer settings.
Modular Design
A conventional A4 binder is too large to print as a single piece on many compact 3D printers. This design solves that problem by dividing the binder into smaller modules.
Every individual component fits within the Prusa MINI build volume. The modules can then be assembled using the dedicated connectors.
The modular construction also makes the binder easier to transport and repair. If a component is damaged, only that component needs to be replaced.
Assembly
The binder is assembled by connecting the main modules with the triangular connectors. The connectors have been tested to provide a secure fit without excessive looseness.
The 4-ring system holds the pages in place, while the removable sheet-retaining mechanism allows the pages to be removed when necessary.
A detailed step-by-step assembly guide is provided with the model.
Development
The design was developed and tested through multiple iterations. Particular attention was given to the fit and strength of the modular connectors and the functionality of the ring and sheet-retaining systems.