A print that enables you to stack two Ikea Vattenkar shelves (for space saving). Or the Vattenkar plant-nursery in this case...

The prints are made to be sturdy, but I would limit it to 1 stack high like in the pictures. Please don't stack heavy things on the top shelf.

Installation is simple:

Print two shelf stackers.

Remove the shelf screws, insert the prints (they will NOT insert with the screws in place).

Screw back the shelves. This may be harder as the screws will go through the 3d print. This adds stability. Predrilling may be needed.

Place the second Vattenkar shelf on top.

Enjoy!

I've printed these in both PLA and TPU. Both work, but I'd advise using PLA. Nothing that fits the top shelf will break the PLA. No supports are needed (the overhang is minimal).