My first(3D-model) and very simplistic solution to a just as simple and heavy storage problem.

I recommend printing with ASA and lots of walls for enough strength to hold the heavy miter stand.

In addition to that i recommend using “wafer head” screws of good quality for a secure mounting to the wall.

I made the screw holes 5mm to give 4,2mm Wafer head screws some room.

Please make sure the wall can hold the loaded screws and please don´t overtighten them.