Funnel with sieve for espresso 58mm portafilter (redesigned)

UPDATE: IT WORKS! (kind of). I redesigned it with a little rotating wiper that helps push the coffee through the sieve. I would still like to improve the usability.

This is for sieving your espresso grinds into the portafilter of your espresso machine. I've pre-made an stl that fits in a 58mm portafilter (most machines).

I will post an update when I have tested it.

The .scad file is just a mix up of mesh http://www.thingiverse.com/thing:27805
and funnel
http://www.thingiverse.com