Would you reuse these rotors?

Cool I always wanted to get into machine shop and never did It. I always like metal work I do some amature gunsmithing. I can do a some stuff with a lathe but I wish I would have went to school and really learned it. It would be so cool to work for myself. Machine work weither it be for engines guns knifes or just general fabrication is not cheap wish I would have pursued that dream. Oh well live and learn lol
I always wanted a lathe,never run one. So i found one that was affordable. 1947 southbend.
Then i watched tubalcain videos on youtube. Smart feller. Learned a lot.