STOP...Don't go there.
I'm assuming you are talking about the flat die pellet mills? We tried that and it didn't work. Two things:
- The temperature of the pellet gets too high when pushed through the die. You destroy the essential oils and alpha acids
- The sticky lupulin builds up between the roller and the wall. Even with an oversized motor, it will grind to a halt in no time.
- flat dies are also pretty thick, so you can easily loose several pounds as waste. If someone wants one to pelletize their own personal stock, you would waste more hops that you would get out.
If you want to pelletize, you have to go to a ring die pellet mill and they run big bucks. With the ring die, you have a large enough motor to make the pellet but you can also add a source of cooling to keep the temperature down.
And this advice comes at the expense of
personal experience.