hi is it possible to recoil this ice cream machine drum with copper tubing as the evaporator and what is the best size copper I am trying to rebuild this for a friend the top layer of the drum what is rusted out beyond repair so all the refrigerant leaks out
I remove the top layer of the durm and now i want to recoil with copper tubing as the evaporator

this is the drum it is 36''x14''
IMG_20170119_114803.jpg

condenser
IMG_20170119_114644.jpg