"Swingman" wrote in message

: "John" wrote in message
: ...
: I have come across this term in descriptions of wood. Does it refer to
: changes with humidity, or something else?
:
: Conversely wood will shrink for the same reason when exposed to low
relative
: humidity for any length of time.

It is worth knowing that over the long term, wood shrinks in width and
thickness.

This is due to hysteresis - after a swell/shrink cycle the wood does not
return to its exact previous state.

This is why through tenons, dovetail tails and pins will eventually appear
slightly proud.

Jeff G

--
Jeff Gorman, West Yorkshire, UK
Email address is username@ISP
username is amgron
ISP is clara.co.uk
Website www.amgron.clara.net