Soil retaining mesh grill for upside-down planter

I decided to make an upside-down planter for suspending pot plants from the roof of the conservatory.

Having bought a cheap, but nice looking, flower pot from the local garden centre and drilling a hole in the bottom, I decided to add a mesh grill that keeps the soil in.

The design is fully parametric (if you use the OpenSCAD file), so can be adjusted to suit your own needs. My flower pot has four mouldings in the base and the grill had to be notched to fit around them.