This might be kinda hard to make
how about a Tinkerer in Electrical and Mechanical version, which could get items from a Weighted ejector, belts etc
but it's so you filter a item you want to craft and this machine will autocraft it :D

Create already has autocrafting.

Yes but this should be crafter and you don't need many mech crafters to make a millstone with that tinkerer

I don't understand the purpose of this.