I wanted a more stable and secured way to build a shelving unit using the Multiboard system while leaving as much 'open' space on the sides. Thus, I spliced two 6x6 push-fit brackets together into this here thing.

This is two Multiboard 6x6 Push-fit Brackets merged into one. This is made so I can put one Multiboard Plate on the bottom, and then on the top and bolt-lock them together.

This takes approximately 2hours 20 minutes to print using HS PLA on a Bambu P1S.