Kallax Splicing Cross Bracket

UPDATED 2/13/2022:
For the files with no holes, I made the base a little thinner, added a small raised lip on the smaller arms to fill in the gap that is created from the divider being a little further back than the frame, and the edges are rounded to look better.

I designed this specifically for an IKEA Kallax situation for my basement. I used a 2x4 Kallax and split the two shorter wall pieces in half, as well as the three longer divider pieces to allow me to set them on top of a 4x4 Kallax. There are no pre-drilled hols for the dowel rods, so I designed these brackets to keep the pieces lined up and stable.

I print this with the flat side down. Use concentric supports for the screw holes.

There are two versions: one with holes for screws, and one with no holes. I will use the ones with holes for the back of the cabinet.

Feel free to make any adjustments or give any suggestions. This is my first shared project. Glad to contribute!