Thank you for the reply. I've messed with lathes and mills in the past (Sherline) and have been considering getting another with cnc, then saw the printers. I agree on casting for speed and economical reason on a lot of parts for tanks. I'm not so worried about the time, since making parts from nothing, like printing, or whittling down a piece of metal or plastic into a part is going to take some time.
Sounds like the mill and lathe would be better for my needs and dabble in a printer for things too awkward for the machines...

Thanks again ausf.