Prusa MK2S, MK2.5, MK2.5S Z-Axis Reinforcement/Brace

With the introduction of the new Prusa MK3(S) frame, I wanted to make my MK2.5S similarly rigid, if not more so.
10
64
1
857
updated September 21, 2020

Description

PDF

With the introduction of the new Prusa MK3(S) frame, I wanted to make my MK2.5S similarly rigid, if not more so. There were a couple great options, such as this:
https://www.thingiverse.com/thing:1656945
This design and others came with two issues. Firstly, they all required complete disassembly of the Y-axis. And secondly, even if I did use one of their designs, the setup wouldn't work with this Y-axis upgrade I'm planning to install:
https://www.thingiverse.com/thing:2836470
This solves both problems by being a drop-in solution; no Y-axis disassembly required. And it really does make the entire frame stiffer.

Other than the printed parts you will need:
Two 14.5" lengths of 5/16" threaded rod
Eight 5/16" nuts
Six 5/16" washers
Four M3x20 screws
Four M3 nuts
Optional: Plastic tubing with 5/16" ID

Print instructions

I personally used the following settings: PETG, 5 perimeters, 20% cubic infill, and 0.2mm layer height. You can use any filament, as long as it's fairly stiff after printing. I had some Proto Pasta CFPLA in my bin, but that seemed a little overkill at the time.

Print as oriented in the files for the stiffest part

Tags



Model origin

The author marked this model as their own original creation. Imported from Thingiverse.

License