George Ghio wrote:
It was as noisy as all get out. When
the contra flow fan was not running it was cooking in the heat rising up
from the stove.

"I took one stab at it, it didn't work out perfectly, so I gave
up. I don't have persistence enough to be bothered. I went and bought
a commerically-available product"

The unwashed masses do draw a conclusion at whatever point they got
too tired to think anymore.