I agree with Brant, you must pay very special attention to the ACC spec's if you are buying your lumber from a lumber yard. We buy very "high grade" lumber here were I work but most if it won't even come close to being usable for an airplane. But on the other hand, if you are lucky enough to be able to hand select what you need and bone up on the minimums that will work for an airplane you can still find some good stuff.
To date I have spent only time sorting, drying and re-sawing the lumber for my airplane, and a few hundred dollars for plywood. But I'm fortunate enough to have access to this limber. As to the comment some made about HEM-FIR (we in the industry call it piss fir because it smell like a cat has pissed on it when it's wet) Please don't take offense to that term, it is very unstable unless it is completely dry, less than 10%, otherwise it moves too much for aircraft use. Another thought you need to consider is if you are buying from a lumber yard, or anyone for that matter, your lumber needs to acclimate itself to the local conditions in your area. Here in NV are ambient humidity is anywhere from 3% in winter to 8% in the summer most the time, which means lumber coming in at 12% is going to lose more moister. The opposite goes for areas that have higher humidity. Your lumber will gain to a certain extent. Just food for thought. Fred Johnson Reno, NV -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Brant Hollensbe Sent: Thursday, March 15, 2007 6:34 PM To: KRnet Subject: KR> Source of Douglas Fir Everyone needs to understand that the construction grade Douglas fir that is sold at stores like Lowe's, Home Depot, and the local Mom and Pop lumberyards must meet or exceed certain industry standards to be called construction grade lumber.
