hello,

try to get some 150 microns mesh and you can get some good stash for a few bucks.

I prefer don´t use any kind of stones, beans or something for hit the nugs, it allow to pass more plant material in the resin.

recently I bought a tumpler, 110 LPI (something like 160 microns) and the extracts using it are very good quality in runs of 5 or 8 minutes, if you want more quantity just leave it some more minutes.

regards,
susantidad.