KartonKit

KartonKit, also written kartonkit, is a modular construction system built around lightweight cardboard panels and simple interlocking joints. Designed for education, prototyping, and DIY projects, it enables users to assemble and reconfigure structures without tools. The panels are typically produced from recycled cardboard stock and use durable, scored folds and tab-and-slot connections to create stable assemblies. The system emphasizes ease of use, flat-pack storage, and recyclability, with some variants offering pre-printed textures or color-coded connectors to guide assembly.

KartonKit products are commonly used in classrooms to teach basic engineering, geometry, and design thinking. Makers and hobbyists use them for rapid prototyping of models and installations, as well as for temporary structures in art projects. The open-ended nature of the set supports experimentation with load-bearing designs, enclosure concepts, and architectural models, though it is generally best suited for light- to moderate-duty applications, given cardboard's moisture sensitivity and limited tensile strength.

In terms of development, KartonKit has evolved through community feedback and modular extensions, with variations that include larger-scale kits, reinforced joints, or coating options to improve durability and water resistance. The project is often highlighted for its sustainability credentials, mainly due to the use of recyclable materials and the potential for reuse and recycling at end of life. Critics note that while cardboard-based systems offer accessibility and low cost, they require careful handling and do not substitute for more robust construction methods in professional contexts.