Even though the polygraph is colloquially connected with pseudoscientific lie detector checks, the actual creation of the to start with polygraph was intended to mechanically replicate the pen strokes of anyone composing. Famously, a polygraph was used by former US President Thomas Jefferson in his “modern office”, a replica of which still sits in the Smithsonian museum. Handful of of us have a want for a pen-centered polygraph any longer, but inspiration from the centuries-aged creation can nonetheless be gleaned from the machine, like in this 3D printer which can output 4 equivalent prints at at the time.
The printer is a Core XY design with 4 individual print heads, which are all locked with each other. The printer behaves as if there is a solitary print head which keeps it more simple than it if not could be. Some added thing to consider needs to be compensated to the print bed to be certain it is level and flat, and it also involves a unique Z-axis created to reduce Z-banding from lousy excellent leadscrews. It has a rather wide print area, but a noticeable restriction is that it is fundamentally quartered, so although it can generate numerous pieces at when, it can not generate a solitary portion that uses the whole area of the print bed.
Each and every printed portion utilized to make this printer was intended by [Rick] in OpenSCAD. He also constructed a customized electronics board with the printer drivers, and all other involved circuitry in KiCad. For anyone who prints huge volumes of pieces, this could possibly be just the trick to maximize output with no acquiring to handle a lot more printers. If you now have extra printers and want an simpler way to take care of them all, consider a glimpse at this committed Raspberry Pi established up to do just that.