Good example. I used to calculate the 'increase of diameter' of
a band placed around the world. It was set up to put a tight belt
and then add a 12" extension of the band. Question - how high would
the belt rise over the earth... ?

Lesson - just leave a little room for wood expansion.

Martin

On 4/5/2014 3:45 PM, woodchucker wrote:
This guy Jack Houweling puts it in perspective.
https://www.youtube.com/watch?v=11FS...em-uploademail

Geez I knew it moved, but when you see how a trapped wood movement can
appear it's remarkable.