The end checks
were unexpectedly increased in Group C; it seems reasonable to suppose that the 10-mm cut destroyed the balance among the wood cells and that the resultant uneven shrinkages during drying caused more end checks
* The first cut is made to square the end and remove end checks
. However, a single end split of more than 1 to 2 inches should be left for the ripsaws to remove.
Oh, and a guy on the eighth floor just lurks, and at the end checks
us out with his binoculars.
Every board was examined for end checks
, surface checks, shake, twist, bow, cup, crook, and assigned a predrying grade.
The first cut to square the end should remove end checks
The load-carrying capacity of Douglas-fir, which had multiple small end checks
, essentially doubled, e.g., from 2,552 pounds to 4,967 pounds, when the end-distance was increased from 1.75 to 4 inches.
"We guarantee that all end checks
are removed and that the parts are uniform in color and have smooth edges," Pyle says.
The lumber was inspected for end checks
, surface checks, shake, twist, bow, cup, and crook prior to kiln-drying.
Therefore, some strips need not be trimmed as severely as others since the end checks
will vary in length.
End checking, as measured by the number of end checks
and the length of the longest end check
, was also determined.
"We'll guarantee that all end checks
are removed and in a standard order, 60 percent of that order will be in 11-foot or longer lengths.
It is somewhat anomalous then that SYP with such a large difference in permeability, can be dried quickly, at kiln temperatures above 120[degrees]C, with little or no end checks
or within-board moisture variation.