no matter which mesh i use or what i put in the sieve it doesn't give any broken ore, ore pieces, etc. the game also doesn't show ore pieces as an item available.

just went further into similar threads, i think unidict might be doing it. i will try removing that first and close this if it fixes it

it doesn't seem to have solved it

Can you run your json file through a json validator (e.g. https://jsonlint.com/) and see if you get any errors. It sounds like the game isn't creating any ore of the items.