Turtles like these?
The Archelons, colloquially known as the Space Turtles, are successors to an ancient chapter dedicated to the forge. They wander the stars of their worlds in a massive mobile space forge of ancient design, able to fly and consume resources in deep space, and even grav lift chunks of planets to mine directly from. They are renowned armor smiths, excelling past their founding brethren, and are known to live entirely within their customized suits of armor, never removing it except in parts to service and upgrade.
Still WIP, but it's getting somewhere. But you have to get the basics ready before you go ridiculous.