I was wondering if anybody would have some insight on checking of the live knots in DF export squares.  The sizes being dried are 90x90, 105x105 and 120x120 (mm of course).  The problem with this is that when this lumber is run on the planer, the knots can be chipped, or torn out of the board causing it to be down graded.

Linkback: http://www.kilndrying.org/drying-defects/3/checking-in-the-live-knots-in-df-export-squares/515/