Polar Drawing Machine Made with Simple Tools

It’s amazing the kind of things that people make with sophisticated equipment. However, if you only have access to fairly basic hand/power tools, you can still make something awesome. As shown in the Mr. Innovative video below, he was able to create a polar plotter using little more than a saw and handheld rotary tool.

The device uses a stepper motor to rotate its turntable via a toothed belt, along with a second belt section glued to it to act as external teeth. The second axis of movement is an overhead gantry actuated about by a second stepper/toothed belt. This belt pulls a wooden frame held on to metal rods with a pair of linear bearings. A pen and micro servo are attached to the frame, while the servo extends and retracts the pen’s ballpoint as needed for a proper picture.

More details on this Arduino Nano-controlled machine can be found here, and the coaster polar plotter that forms the basis for the build is available on this page.

Be sure to check out a demo and the build process in the video. Besides resulting in an device, a few interesting tricks are shown along the way. How the base is made to accommodate a stepper motor by simply cutting a notch in a piece of framing lumber at around 2:15 is especially clever.

Polar Drawing Machine Made with Simple Tools was originally published in Hackster Blog on Medium, where people are continuing the conversation by highlighting and responding to this story.

Original article: Polar Drawing Machine Made with Simple Tools
Author: Jeremy S. Cook