Design Guidelines

1. All measurements are in millimeters (mm).
2. The main dimensions are based on 10 mm. Other suggested sizes are multiples or fractions of 10 mm: 5 mm, 2.5 mm, 1 mm, 20 mm, 50 mm, etc.
3. M3 standard screws are used for assembly of parts.
4. Holes for tight-fit screws should have a 2.5 mm diameter.
5. Holes for free-fit screws should have a 3.0 mm diameter.
6. Holes for free-fit screws are recommended to have a 2.0 mm equal-sided chamfer.
7. Tight-fit screw holes should have a minimum depth of 2.0 mm. The recommended minimum depth is 3.50 mm.
8. Outer corners of parts should have a 0.5 mm equal-sided chamfer.
9. For the round parts, the diameter should be 0.5 mm reduced.

Most toys today are designed with a fixed purpose in mind. Once they break, get boring, or feel outdated, they're tossed aside. But creativity doesn't follow a fixed path—it evolves, grows, and takes unexpected turns. At ReDo, we’ve built our entire system around that idea. Modularity isn’t a feature we added—it’s the foundation of everything we do. Because a toy should never become obsolete just because a child grows older or a single part fails.

ReDo’s modular design is based on a universal 10mm grid and M3 screws, allowing every part to fit together intuitively. This simplicity unlocks complexity. With just a handful of standard parts, you can create walking robots, interactive art pieces, sensor-driven vehicles, or programmable characters. And because every component is reusable and reconfigurable, you’re never starting from scratch—you’re building on what you’ve already made.

Imagine turning a robotic creature into a construction crane. With ReDo, that’s not a big leap. Keep the smart servo motors, change out the structure, and rewrite the code. The logic is yours to define, and the hardware is made to follow. This approach turns toys into platforms—systems that grow with your imagination rather than limit it. Modularity creates a loop of exploration and refinement, not a dead end.

It also empowers kids to become confident builders. Instead of following rigid instructions, they can explore possibilities. If something breaks, they can repair or redesign it. If something doesn’t behave the way they expected, they can reprogram it. This process teaches not just engineering but agency. It builds problem-solving skills and invites experimentation. With ReDo, frustration becomes a gateway to invention.

For families, educators, and makers, modularity means value and sustainability. There’s no need to buy a new toy for every new interest. One set of components can support hundreds of different ideas. And since ReDo is open-source, users can create and share new parts, expanding the ecosystem far beyond what any single company could provide. This keeps creativity fresh—and keeps toys out of the landfill.

In a world that’s constantly changing, toys should be adaptable too. ReDo’s modular system transforms play from a momentary distraction into a lifelong skill-building journey. It’s not about what the toy does out of the box—it’s about what it can become next. With ReDo, the only real limit is your imagination.

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Most toys today are designed with a fixed purpose in mind. Once they break, get boring, or feel outdated, they're tossed aside. But creativity doesn't follow a fixed path—it evolves, grows, and takes unexpected turns. At ReDo, we’ve built our entire system around that idea. Modularity isn’t a feature we added—it’s the foundation of everything we do. Because a toy should never become obsolete just because a child grows older or a single part fails.

ReDo’s modular design is based on a universal 10mm grid and M3 screws, allowing every part to fit together intuitively. This simplicity unlocks complexity. With just a handful of standard parts, you can create walking robots, interactive art pieces, sensor-driven vehicles, or programmable characters. And because every component is reusable and reconfigurable, you’re never starting from scratch—you’re building on what you’ve already made.

Imagine turning a robotic creature into a construction crane. With ReDo, that’s not a big leap. Keep the smart servo motors, change out the structure, and rewrite the code. The logic is yours to define, and the hardware is made to follow. This approach turns toys into platforms—systems that grow with your imagination rather than limit it. Modularity creates a loop of exploration and refinement, not a dead end.

It also empowers kids to become confident builders. Instead of following rigid instructions, they can explore possibilities. If something breaks, they can repair or redesign it. If something doesn’t behave the way they expected, they can reprogram it. This process teaches not just engineering but agency. It builds problem-solving skills and invites experimentation. With ReDo, frustration becomes a gateway to invention.

For families, educators, and makers, modularity means value and sustainability. There’s no need to buy a new toy for every new interest. One set of components can support hundreds of different ideas. And since ReDo is open-source, users can create and share new parts, expanding the ecosystem far beyond what any single company could provide. This keeps creativity fresh—and keeps toys out of the landfill.

In a world that’s constantly changing, toys should be adaptable too. ReDo’s modular system transforms play from a momentary distraction into a lifelong skill-building journey. It’s not about what the toy does out of the box—it’s about what it can become next. With ReDo, the only real limit is your imagination.

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