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Materials

The Contraptor set is designed to be made from a small number of inexpensive materials and parts: aluminum angle and square tube, UHMWPE channel, bearings, pulleys and belts, motor couplings, all-thread rod, generic fastener hardware.

Generic hardware and aluminum angle can be bought in hardware store on demand. Large quantities are generally cheaper to buy online.

The BoM lists the part numbers, quantities, suppliers and prices of mechanical and electrical components for the default configuration of the Contraptor set. The default configuration includes hardware/electronics for three axes, three pairs of belts, and four 3ft threaded rods as leadscrews.

While the default configuration should be enough to make many 3-axis CNC projects, other contraptions may require a few additional parts, for example belts or threaded rods of different lengths, electronics or motors for additional axes. These additional parts are few, inexpensive, and can be reused in future projects.

Each contraption should have a similar BoM listing all of the required components and materials.

Source Files


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