KR-netters: That is why you must pay careful attention to the ASTM specs for A/C spruce, They are Tough.
Don -------------------------------------------------------------------------------- ----- Original Message ----- From: "Brant Hollensbe" <bhollen...@mchsi.com> To: "KRnet" <kr...@mylist.net> Sent: Thursday, March 15, 2007 9:34 PM 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. > > As the lumber mill, cuts the trees into usable lumber, they will inspect and > make sure that their lumber meets this standard and reject lumber that do > not meet it. > > What that means to Airplane builders is that occasionally we can find lumber > at the store, that not only exceeds the standards of building lumber for our > home....but that it will meet the standards required for aircraft wood too. > > It takes a careful eye and some knowledge of grading lumber to discover > these hidden treasures. > I will warn some you that lumber marked HEM/FIR and often sold as Douglas > fir is in fact a mixture of hemlock wood and species of fir (not necessary > Douglas fir). Then there is also the issue of moisture content to contend > with. > > Brant Hollensbe > DSM Iowa > Bhollensbe at mchsi.com > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > Post photos, introductions, and For Sale items to > http://www.kr2forum.com/phpBB2/index.php > please see other KRnet info at http://www.krnet.org/info.html >
