Yes, they do have these in MgT 2300AD. The intent is to be able to fabricate spare parts for repairs, without keeping huge bins of spares in the engineering section. You do have to keep feedstock for the machine.
There is also a lot of stuff about how the software has controls so that you can't use it to make parts for weapons, but that seemed pretty silly to me. Really, the software database is gonna contain specs for all sorts of weapon parts so it can recognize what it is not allowed to make? How long before that gets hacked to turn the machine into a weapon factory?
Edit: OK, here are the specs from 2300AD:
Small Fabricator: suitable for making small parts up to 15 cubic centimeters in size
(I think maybe they intended a 15x15x15 cm cube? 15cc isn't very big part for the size of the unit and feedstock consumed)
TL: 9 - Weight: 12kg - Price Lv350 - Refill Weight 0.75kg - Refill Price Lv25
Portable Fabricator: can create repair parts sized up to 100cm x 100cm x 30cm
TL: 10 - Weight 220kg - Price Lv7500 - Refill Weight 20kg - Refill Price Lv300