computoman

CNC is a big thing. You might think of it as the 2d version of a 3d machine. With a 2d machine you remove material and with a 3d machine you add material to get an object. Always have wanted to build one myself. Have the stepper motors, just have to make the rack. Numerical control (NC) is the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium, as opposed to controlled manually via hand wheels or levers, or mechanically automated via cams alone. Most NC today is computer (or computerized) numerical control (CNC) in which computers play an integral part of the control . Nowadays you can get a computer and almost do all of it yourself.  First you have to have a drawing prepared. There are lots of existing artwork you can use or you can create your own .svg files with Inkscape. Scalable Vector Graphics ( SVG ) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animat...

There are a lot of diy cases on the net. Probably the most notable one is the cardboard case.  You can easily find them on the net by looking for RPi printable cases. Be sure and tell the printing program not to resize image for printing. This next two were not real impressive and not so easily put together. Kind of flimsy? This next one seemed a bit complicated. Then there are the .dxf files with Librecad so you can use them a laser cutter or cnc router.