sideway it's a little bit wiggle because the hole is 10x20mm and the bolt is 9x19mm but you can insert the small wedges. 

Let me know if you have a better idee instead of the small wedges without screws and nuts ;-)

If you want to adjust it to your personal height but can't use CAD, then take the stand model "high" and cut it to the desired dimensions in your favorite slicer.

today i think you can print it with only  4 or 3 walls, that's strong enought