3D printing
3D printing is a popular method from the wider field of additive manufacturing to make a very wide variety of mechanical parts cheaply at home. Mastering the 3D printing toolchain, from the design idea in your head to a physical part in your hands, can lift the mechanical side of all your robot projects to the next level.
What is a 3D printer?
A 3D printer is a machine that can create arbitrarily shaped 3D parts from an input material. There are many types of 3D printers. We will focus on the Fused Filament Fabrication type (or FFF for short) since these are by far the most widely used machines. An FFF 3D printer takes in material in the form of a thermoplastic filament from a spool, extrudes it through a hot nozzle where it melts, and deposits the molten material, layer for layer, onto a build plate. The nozzle can move freely in the horizontal x and y directions, allowing for extremely precise material deposition within a horizontal layer. With each layer, the nozzle...