Though the polygraph is colloquially involved with pseudoscientific lie detector checks, the precise creation of the initial polygraph was developed to mechanically copy the pen strokes of a person writing. Famously, a polygraph was utilised by previous US President Thomas Jefferson in his “modern office”, a replica of which however sits in the Smithsonian museum. Handful of of us have a require for a pen-based mostly polygraph anymore, but inspiration from the centuries-outdated creation can even now be gleaned from the device, like in this 3D printer which can output 4 identical prints at at the time.
The printer is a Core XY design with four separate print heads, which are all locked with each other. The printer behaves as if there is a solitary print head which keeps it less difficult than it if not could be. Some additional consideration wants to be paid to the print mattress to ensure it’s amount and flat, and it also involves a exceptional Z-axis intended to avert Z-banding from bad quality leadscrews. It has a quite broad print place, but a obvious restriction is that it’s primarily quartered, so whilst it can develop quite a few sections at when, it just can’t deliver a single portion that works by using the complete region of the print bed.
Just about every printed portion utilised to make this printer was developed by [Rick] in OpenSCAD. He also built a customized electronics board with the printer motorists, and all other connected circuitry in KiCad. For everyone who prints massive volumes of pieces, this may possibly be just the trick to boost output without the need of getting to control more printers. If you now have much more printers and need an less complicated way to deal with them all, take a look at this devoted Raspberry Pi set up to do just that.