I searched about the subject in this website and could only find this question here asking "if there is an FDM Resin 3D printer", not how to build it.
The idea is to replace the inks for other fluids, such as resin and its hardener (and other fluids) and then add a Z axis "somehow".
The thing is: I couldn't find any tutorial on the subject.
The closest thing I could find was this project here called Oasis 3DP, an open source powder and inkjet 3D printer, but the objects are incredibly fragile.
The other type was this DIY that converts a creality 3D into a ink printer, but it uses homemade nozzles actuated by piezoelectrics instead of a inkjet printer nozzle, and the results aren't as good as a conventional inkjet printers (not to insult the creator this is hella cool still).