re: Question on Sawmilling timber

Dude; the formula for the Doyle Rule is “D - 4 divided by 4 x the length. D being diameter at small end of log. Length being no mater what length of the log is. The log can be 100 feet long and the number of board feet will be computed. From 0 to 19 inches on the small end, the formula calculates a third less than reality. This is to insure the buyer (mills) will be guaranteed a profit to stay in business.