Playback speed
MB3 149a: Chopping Vegetables Very Finely on Shabbos (321:12-13)
Cutting vegetables very finely on Shabbos is considered grinding and is only permissible for immediate use (similar to borer). It has to be done "by hand" (i.e. not a utensil made for grinding).
Chopping wood.
Removing honeycombs on Shabbos is prohibited.