Mark D. and Mark L.

M&M lined the crawlspace of the bake enclosure with 2" thick foam board. That gained us 3-4 degC, up to 83C. They finished lining the slab portion today and also started to totally cover the box with Al foil. So far we're at 89C! They will finish with the Al on Monday. The enclosure is pretty leaky all around so the Al liner should help significantly. Pretty soon it'll look like one big faraday cage.

As an experiment, today M&M installed the 10" extension pipe on return duct, but this only made the bottom temperature drop by 20 degrees. Internal bottom temps recovered quickly to 83C. Top half is back to setpoint of 115C.