It doesn't work like the video, the harder the material is, the harder it is to grind and the more force it takes.

I didn't even realize it was completely broken. I thought it was poorly finished, but when I opened it to use it, it was broken.

The delivery packaging was poor, so it looks like it cracked during delivery. I don't think there will be any problem with the product's function, so I'm not returning it, but I think I need to pay more attention to the packaging.