smallest ikea lack connector

based on the idea from "nothing_fr", I create my own adapter to stack the Ikea lack table together to a tower.

The improvement of my version is, that the plexiglasses more on the table border.

In comparison with similar models, you can use this part also on the upper corner of the table leg. In reason you wish to add a door, is only needed to break one of the triangles out.

With Version from 31. January 2017 I improved the holes in it. The center hole is only for the Lacks own Screws. The four other ones can use to fix a table from the upper side.

The "high" version is to offer more distances between the boards to make possible to place Anet A8 in the tower.