Three part project. The picture above is the 60mm version, but the STL is the 110mm rim version. This can be found in detail on Autodesk viewer: https://autode.sk/3239mSd
Screw Cap, made to screw on top of an Elegoo Resin bottle. Has 2 air holes to allow air to escape as resin goes in, without resin to come out the air holes.
Filter, sits inside the cap between the funnel and the cap.