PetraPrinter: Z Axis on mgn12 linear rail t8 leadscrew 2020 frame

thingiverse

I spent several months designing and building my own printer from scratch. During this time, I learned the fundamentals of CAD and 3D printing itself. The design objectives were to create a Prusa-style printer with an enclosure capable of printing high-temperature materials like ABS. Although I would not build this machine in the same way again today, there are still some innovative and unique solutions worth sharing. Given these reasons, I'm sharing the files component-by-component instead of the full printer, which has some design flaws. Watch the video at [youtube link here]. All OpenSCAD files are available on [Github](https://github.com/zsellera/petra-printer). The PetraPrinter collection is also available on Thingiverse at https://www.thingiverse.com/zsellera/collections/petraprinter. ### About these parts The three parts are a bottom motor holder, a top 608 bearing holder and the MGN12H-mounted carriage itself using 4x M3x15 screws. The X axis is joined with the Z carriage using two M5x10 cap-headed screws. The carriage houses an anti-backlash T8 nut (see pictures for details). Note: You can print all parts without support, but the inner part of the carriage will look unsightly. As that part has no mechanical function, it's okay to go ahead and print it anyway.