For professional baristas, please follow the coffee workshop (Wechat official account cafe_style)
The following two web sites about "Hmur5 mailbox hand bean grinder" have a very clear introduction:
Hmur5 mailbox type hand bean grinder
Instructions for assembling the mailbox type hand bean grinder
This hand grinder is really easy to use, especially when you only make yourself a cup of coffee
Up to now, I'm not in maintenance, I'm not cleaning, and I don't have diarrhea. I still have a strong head.
I don't know why I often have diarrhea when I buy coffee outside. I've never cooked it myself)
The picture below is my mailbox hand bean grinder:
In order not to clean the interior, some people on the Internet can share it with plastic bags directly.
Later, I found that there would be a problem of static electricity in this way, and the coffee powder would be sucked up after playing.
At the top, and the coffee powder will get stuck in the plastic bag, as shown below:
So I went to the stationery store to buy thick cardboard and made a round paper bucket to put it in. It was very simple.
Is to use a rectangular mouth first.