I have never regretted being picky about my stock selection at the lumberyard, but I have sometimes regretted not being picky enough. When faced with stacks and stacks of construction lumber at a big box home center, however, it can be difficult to find stock that is straight enough and clear enough for use in furniture. Digging through the pile at random is a waste of time. Instead, there are important clues that will tell you where to dig.
First, look at the end grain on each end of the pile.
In pine, boards from slow-grown trees have thinner growth rings closer together. These are desirable because closely-spaced rings make the wood stronger, but also because such wood has likely come from a larger tree with fewer knots.
The boards indicated above might be worth digging for. You would have to work around the pith in the top one, but the wood is quarter-sawn on each side of the pith, so this wide board might yield two narrower ones.
However, looking at the end grain at one point in a 16′ board won’t tell us much about what’s in the rest of the board. So we proceed to step two.
Second, look at the visible edge grain on the side of the pile.
This is a stack of 8′ boards. The two boards pointed out above show some promise. The grain is regular and relatively straight, and there are no knots visible anywhere along the length of either board. Time to start digging!
Yes, indeed, both boards are worth taking home! The one on the bottom has almost no defects at all, and the one on the top (on its edge next to the pile in the photo above) also has minimal flaws.
Here’s one more example of promising edge-grain:
Crooked edge grain indicates the presence of knots near the middle of the board, and even if the knots are small, the reversing grain will be difficult to plane. The boards indicated above, however, are worth looking at.
They turned out to have lots of usable wood in them.
Lastly, start down at the 16′ 2X12s.
The widest and longest boards come from the biggest trees and will tend to have fewer defects than the smaller boards. But don’t overlook the smaller dimensions. I’ve found 8′ 2X6s that were almost completely free of defects. As you walk past the piles, glance at the edge grain, and you’ll soon see some wood that catches your eye. Just steer clear of the 2X4s and 4X4s. Those tend to have the most defects.