Works great I heat it all winter with a wood pellet stove and sometimes it got -20 degrees … so the 2x6 framed walls with the 6" insulation nd he reflective foil on ceiling is good enough for me. kept it a comfortable 55 to 60 all winter
OCD good work on your grandfather's axehead... could have left one side as is for a good look back of all the years of abuse it had been through to compare it to the polished look