If you remove the PSU from the frame of the Original Prusa i3 MK3 (for example because you want to have the PSU outside of an enclosure) you can replace it with this brace to keep the frame rigid.
You can see it's usage in this video: https://www.youtube.com/watch?v=oS7ZtBNh2hE
Print from a rigid (so not flexible) material.
PLA will work just fine.
Remember to come back and post what you've printed as Make.
It's good for the designer and the community (that means you)!
To post a Make, come back to this Thing and click Post a Make.
Or, you can use the Thingiverse Mobile app found on
and the Apple App Store.