This device helps to crush grapes in the production of home-made wine.

Supplementary material:

1. stainless steel bolt M4x16 - 9 pieces
2. stainless steel spacer M4 - 9 pieces
3. screw M2x10 - 2 pieces (mounting the drive gear) The output of the drive shaft is made under the handle from such a grater https://aliexpress.ru/item/1000007820514.html

How it works and builds - see the video.