Although the polygraph is colloquially related with pseudoscientific lie detector checks, the real invention of the very first polygraph was made to mechanically replicate the pen strokes of another person writing. Famously, a polygraph was utilised by former US President Thomas Jefferson in his “modern office”, a replica of which however sits in the Smithsonian museum. Couple of us have a need to have for a pen-primarily based polygraph any more, but inspiration from the centuries-old creation can nevertheless be gleaned from the machine, like in this 3D printer which can output four identical prints at once.
The printer is a Core XY structure with four individual print heads, which are all locked alongside one another. The printer behaves as if there is a solitary print head which keeps it less difficult than it usually could be. Some additional consideration wants to be compensated to the print mattress to make sure it’s level and flat, and it also contains a exceptional Z-axis created to prevent Z-banding from lousy excellent leadscrews. It has a quite vast print spot, but a obvious restriction is that it’s basically quartered, so although it can make a lot of parts at when, it just can’t develop a one element that employs the full region of the print mattress.
Every single printed element utilized to make this printer was made by [Rick] in OpenSCAD. He also built a custom electronics board with the printer motorists, and all other associated circuitry in KiCad. For any one who prints huge volumes of sections, this may be just the trick to raise output devoid of possessing to manage far more printers. If you previously have much more printers and have to have an easier way to handle them all, get a glance at this focused Raspberry Pi established up to do just that.