What is Contraptor
Contraptor is a do-it-yourself reusable construction set for hands-on learning, prototyping cartesian robots, digital fabrication and automation. Contraptor is Open Source Hardware with designs released under CC-BY-SA license.
What to do with it
Various сartesian robots can be quickly assembled from Contraptor and used as a prototyping platform for projects such as mini CNC machine, experimental or bootstrap 3D printer, hot wire cutter, plotter, laboratory robot etc.
Make Contraptor
You can make almost all Contraptor components at home with basic tools using commodity materials and parts. Sketchup models of Contraptor components are hosted on Sketchup 3D Warehouse.