I've made a couple of refractor telescopes in Keplerian configuration at hope with pieces of cardboard and random lenses I've owned/found at the Optics college at the University of Arizona
One of the projects I want to work on is making a reflector telescope. I think I need to start with a simple Newtonian. I orignally wanted to grind and polish a glass mirror blank myself, but I talked to one of my Optics professors and he mentioned a stepping stone from making simple refractors to making a reflector should be acquiring a premade mirror to mess with configurations. So making my own mirrors is delayed, but he directed me towards ordering a spherical main mirror on Amazon and 3D printing its mount that I could try to build. A few of the online references I've found are:
Interstellar Invertebrates is...
