Modular picture frame system

Modular Picture Frame – Fully 3D Printable Building Block System

Display your favorite pictures in a flexible and creative way: this modular picture frame is a fully 3D printable frame system designed like a building block set. The frames are available in two practical sizes: 100 × 100 mm and 100 × 150 mm. Both versions can be freely combined using an integrated connector system.

Whether you want to display single photos, small collections, Polaroids, postcards, artwork, or a full photo wall, this system can be expanded, rearranged, and customized at any time.

Highlights

• Two frame sizes: 100 × 100 mm and 100 × 150 mm
• Modular building block system: freely combine multiple frames
• Fully 3D printable: no magnets, screws, glue, or extra hardware required
• Integrated plug connectors: easy mechanical connection between frames
• Multiple cover options: different front covers for different looks and functions
• Pin cover variants: useful for hanging jewelry, keys, or other small lightweight objects
• Polaroid-compatible: with a small adjustment, Polaroid photos fit perfectly into the 100 × 100 mm frame
• Flexible layouts: arrange the frames horizontally, vertically, offset, or in a clean grid
• Expandable at any time: simply print more frames and add them to your layout
• Perfect for photo walls, postcards, small prints, Polaroids, art cards, and creative wall organization

Concept

The idea behind this design is to create a picture frame that is not just a single standalone object, but part of a larger modular system. Each frame includes matching plug connectors, allowing several frames to be mechanically connected to each other. This creates a stable layout that can still be changed, expanded, or rearranged whenever you want.

In addition to the basic frame, the system includes different modular front covers. These covers can change the appearance of the frame or add extra functionality. Some cover variants include integrated pins, making them useful for hanging keys, jewelry, small accessories, or other lightweight everyday items.

This turns a simple picture frame into a flexible wall module for both decoration and organization.

Polaroid Use

The 100 × 100 mm frame is especially suitable for Polaroid-style photos. With a small adjustment, Polaroid photos fit perfectly into the frame and can be displayed in a clean, modern, and modular way. This makes the system ideal for memory walls, instant photo collections, and personalized photo galleries.

Printing Advantages

All parts are designed to be printed directly on a standard FDM 3D printer. No external components such as screws, magnets, metal clips, or glue are required. This keeps the project simple, affordable, and fully reproducible.

Recommended materials include PLA, PETG, or matte filaments for a clean and high-quality look. By using different colors, you can create subtle frames, contrast designs, or personalized wall layouts.

How to Use

1. Print the frame size you need.
2. Insert your photo, print, postcard, or adjusted Polaroid.
3. Choose and attach an optional front cover.
4. Connect multiple frames using the integrated plug connectors.
5. Expand, rotate, rearrange, or rebuild your layout whenever you like.

The system can be used as a single frame or as a growing modular wall display.

Why This Design?

Most picture frames are either fixed in place or only designed to be used individually. This design combines the function of a classic picture frame with the freedom of a modular system. It is easy to print, simple to assemble, and works completely without additional hardware.

The different cover options make the system even more versatile. It can be used as a classic picture frame, a Polaroid display, a small jewelry holder, a key holder, or a creative wall organization system. The result is a flexible, expandable, and fully 3D printable design for modern wall decoration.