Search Prusa Mk4 . 3, so it is a little bigger than my dying printer Find the cheap Mk 45, Find the best Mk . Ender 3, and similar. The Prusa i3 was one of the best reviewed 3D printers of the past year, and we check out their newest upgrade that allows for 4-color printing with just one. The Prusa i3 series consists of open-source fused deposition modeling 3D printers, manufactured by Czech company Prusa Research under the trademarked name Original Prusa i3.Part of the RepRap project, Prusa i3 printers were named the most used 3D printer in the world. The first Prusa i3 was designed by Josef Pra in 2012, and was released as a commercial kit product. alphabet of swear words. The Original Prusa i3 MK3 is their latest and greatest (up until November 2021, when they pre-announced the XL), and great it is, not the least because of the optimizations built into it, the fact. PrusaSlicer Start G-Code for the Prusa i3 Mk3 The default g-code that ships with PrusaSlicer works just fine, but I found myself wanting to tweak a few.