HSW edge anchors

I created these edge fit anchors so I could mount a HSW to my  Kallax. A Kallax only has solid edges, its sides are hollow honeycomb (how ironic) material which can't be used to fix something to it without a back plate.

It also offers the advantage that your mounting hardware doesn't use up a hex of your HSW.

It is made for 3x20 or 3x16 universal screws (but any countersunk 3xX screw should work).

This is designed for left and right borders of HSWs generated with this generator: https://gridfinity.perplexinglabs.com/pr/hsw/0/0

Unlike the Hex size themselves I don't think the solid edges of a HSW are standardized so it may not fit with other implementations of HSWs.

I included the blend file so you can easily adjust the size of the part if necessary.