Hello everyone! This is my first post on this forum! I am not a mechanical engineer, but an electronics engineer. However, i want to experiment with 3d printed molds. The main idea is to get a cheap desktop injection molding machine, and create my own 3d printed molds. My final goal is to create enclosures, that i think is a relatively easy task. However, there is one part of the enclosure where external connectors must be inserted. Here is a picture of the connectors: So i have to make the "receiver" for this connector. This is what i want to emulate in my enclosure: As you can see, there are holes where the pins enter, and inside there are metal connectors. I can find these connectors in the market, however, i am not sure how this geometry and function can be achieved with a 3d printed injection mold. I learned that the metal connectors can be incorporated with the mold, they are reffered as "molded-in parts". My question is, is incorporating "molded-in parts" something that i can achieve as well with homemade 3d printed molds, or it is not possible? Thank you very much!