Keystones is an open source model for the connection of elements that can be 3D printed on site. It enables the manufacture of products without requiring hardly any processing by the user.

This product allows consumers to create functioning products within the limits of good design. The dimensions of the connection pieces are set in advance, which allows the consumer limited freedom. This ensures the quality of the final products. It is a printable solution that does not automatically lead to unnecessary stuff. The Committee sees it as a first step towards producing by the consumer whereby the designer facilitates.