I have answered “trees” to this question, and have nearly got thumped.
Everywhere is the answer, from firewood piles to expensive wood merchants. I bought 3, 4 meter lengths of steel which came supported by a length of pallet wood of about 18mm thick by 75mm wide. The grain was tangential and so perfect for making fan birds with. 3 have been made so far I think I can get 10 to 20 out of this bit of wood. It has large knots in and lots of short grain as well. So hopefully I can turn this bit of waste wood into a few hundred quids worth, or more of fan birds.
