A hypothetical for your ponderment.
A wooddorker finds a bit of spare space in his yard^H^H^H^H shop, and decides to quickly erect a stout bench from the materials at hand. Let's say the wooddorker finds some somewhat straight, and somewhat cheap dimensional lumber at the local BORG and sets out to build a functional bench from green douglas fir (not really a fir, but this is common usage and I don't really have time discuss vagaries of the various conifers for sale locally, though they are an extremely interesting species), complete with carefully cut/milled/trimmed square dog holes for a beefy iron bench dog.
And let's further say that as the wood seasons, the bench dog holes shrink, making it impossible to use the beefy bench in the bench.
*sigh*
DAMHIKT.
Humbly submitted,
Single-Stop O'Deen