I wrote this after running a small 3D printing side business for ~8 months. It worked in the sense that I got steady orders and revenue, but every part of the process required me (design, printing, assembly), so it never really scaled beyond my time.

I'm interested how others think about this boundary, at what point does something go from “side project” to “business”? And how do you tell if it’s worth trying to scale vs just leaving as is?