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Replimat (also known as RepRap Building System) is an open source modular construction system anyone can make for themselves at home.

Replimat parts are infinitely reusable, require only a few tools, are flexible enough to build most things, and are compatible with other building systems. Machines made from Replimat can reproduce many of their own parts.

Parts are designed for disassembly, cradle-to-cradle reusability, and constructed from waste or other durable, reusable, renewable, recycled and recyclable materials. Each part forms a long lasting, multi-use carbon sink for the waste streams of other processes. Parts fit a modular grid of holes which permit bolting and unbolting at regular intervals. All parts interoperate along the same uniform pattern.

Self reproduction lowers cost, decentralizes production, localizes supply and demand, enables innovation, reduces inventory and storage requirements, spreads knowledge, and empowers individuals and small groups. Parts we haven't replicated yet are known as vitamins and must be sourced from existing processes or manufacturers.

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Reasons to use Replimat

Build projects fast while having fun!
Simple to learn and use
Designed for disassembly and reuse
Standard components drastically reduce inventory, manufacturing requirements
Worldwide availability
Interoperate with modular construction systems

Design goals

The right way is the easiest to copy.
Design parts against grids to reduce complexity and increase modularity and reusability
Parts which work together are built into reusable functional modules
Functional modules are combined into project templates for customization
Ask can this task be performed by a part which is already in the system?
Ask can this part be made to perform more than one task in the system?
Local production
Consume reused, recycled, or renewable materials where possible - trash to treasure
Common parts sets enable real time collaboration across distances
Open source components, production processes, electronics, firmwares and software
Reduce transformations wherever possible.

Progress

○ = Conceptualization and planning
◔ = Identifying vitamins and grid intersections
◑ = Documented and drawn in CAD
◕ = Examples built
● = Nothing more to remove