Ikea Uppdatera/Variera Box Riser

This is [@karlmeyer](https://www.thingiverse.com/karlmeyer/designs)'s stacker design modified for the current Uppdatera 9 ½x6 ¾ " (24.1 cm x 17.1 cm) plastic boxes. I was looking for a way to stack my bins to see them better in deep shelving.

I adjusted the:

* placement of the top groove
* width of the piece (print more or less per level as needed)
* tension in the clip, through adding bumps.