I was at Menards a couple days ago, and asked to see the wood out back in the yard shed. I found 2 fir boards, 20’ long, 2 x 6”, that were from the outside of a large tree. They have about 20 rings per inch and are knot free, with perfectly straight grain for 14’.
Today, I sawed out 8 perfect blanks that I will let air dry a while and plane down to size for the spars.
I checked the density, and the wood averages about 34# per sq. Ft. However, fir is much more resistant to rot and deterioration than Sitka spruce, so I won’t need as much varnish on the wood. A light coat should do the trick. They will probably lose a little weight as they dry out more. Most lumber yard wood is not completely dry. I paid $26.50 for the two boards.
I feel fortunate to find quality wood at a lumber yard for a fraction of the price I would pay elsewhere.