When the polygraph is colloquially affiliated with pseudoscientific lie detector exams, the real creation of the to start with polygraph was developed to mechanically duplicate the pen strokes of another person composing. Famously, a polygraph was used by former US President Thomas Jefferson in his “modern office”, a duplicate of which however sits in the Smithsonian museum. Few of us have a require for a pen-dependent polygraph anymore, but inspiration from the hundreds of years-outdated creation can nevertheless be gleaned from the device, like in this 3D printer which can output four identical prints at when.
The printer is a Main XY style with four different print heads, which are all locked jointly. The printer behaves as if there is a solitary print head which keeps it more simple than it if not could be. Some excess consideration requires to be paid to the print bed to ensure it is amount and flat, and it also includes a special Z-axis designed to avert Z-banding from inadequate top quality leadscrews. It has a relatively huge print region, but a noticeable restriction is that it is primarily quartered, so while it can develop quite a few components at at the time, it cannot develop a one portion that takes advantage of the whole area of the print mattress.
Each printed section made use of to make this printer was developed by [Rick] in OpenSCAD. He also designed a custom electronics board with the printer drivers, and all other connected circuitry in KiCad. For anyone who prints massive volumes of sections, this may possibly be just the trick to increase output without having having to handle much more printers. If you presently have a lot more printers and require an much easier way to take care of them all, acquire a look at this focused Raspberry Pi set up to do just that.