couldn't resist passing this along. A guy uses a discarded rear projection TV lens to concentrate sunlight, with pretty amazing results. boat...
I will need one piece about 20 ft long w/ moments of inertia 25 x 11, and two pieces w moments 4 x 6., both about 15 ft length. If these numbers...
Hey guys, My composite chainplate drawing specs Aiex R90.300 for the core I have a source for Divinycell, and the seller calls it 14-60....