On Wed, 17 Jan 2018 09:03:55 -0800, Electric Comet
wrote:

On Tue, 16 Jan 2018 19:39:09 -0800
pyotr filipivich wrote:

Or in this case: how many boards did they wreck learning what
was the "right amount"?

rhetorical i know

but it is wood so they still have failures

just a reminder
wood has no imperfections but only misuse or miscalculations or in other
words incorrect expectations in its use

Wood has no imperfections? I've certainly come across a crack or two.
I've also come across hidden internal stress, which caused havoc when
it decided to relieve itself.