Tamping station \ stand

Tamping stand \ station for 'standard' 58mm portafilter. Mine's from an Isomac Zaffiro but I assume others will work as well. When portafilter is on the stand it feels a bit more 'slippery' than I would have hoped but it works well enough for me.
There's more tamping stations on Thingiverse but the ones I could find didn't seem to have room for a double spout or were quite large so I made my own.
Designed with FreeCAD, source is attached in case you want to make changes (warning: the design is undocumented and somewhat messy).

EDIT: added small chamfer to the bottom sticking-out edge, in my print this is a bit ragged probably due to the edge being too sharp.