I think therefore I print
Boy meets 3d printer girl. Boy and 3d printer girl fall in love and stay together. Boy wants to learn everything about 3d resin printing, and 3d printer girl wants to print everything the boy likes.
Boy discovers the world of 3d printing and its community. He starts to know a lot about this subject and spends his time helping and solving others' issues so 3d resin printing stays fun (hard, but still fun).
Boy doesn't like to display grey figurines on his desk, he wants color. He starts buying painting material, and watch tutorials and websites about the bases of painting figurines. His material becomes larger, and the 3d printer production too.
One day, the boy offers a figurine to a (human) girl whom love the character. She's so happy she shows everybody ! Girl explains to the boy lot of her friends would like the same. Boy agrees, but it can't be a gift for everybody.
Figurines are booming, the boy's mailbox becomes full. Boy then starts a shop on Etsy to let it deal with the whole business thing while he does what he loves : printing and painting.
Anyway, this is Cat In Vat.