Flight controller spacer mount for ZMR250

Creates a spacer with an insulator between layers on the 32mm holes where you mount a flight controller or a 4-in-1 ESC on a ZMR250 or similar frame. Use nylon screws and nuts to hold it down. In particular, I made these for my frame so that I could stack a CC3D flight controller onto a 4-in-1 ESC and make sure neither touched the other.

There's an "H" and a square shape to work around components and plugs that stick out. Use whichever shape fits better.

I included the OpenSCAD fil