The boom is a 3/4" inch square piece of oak. It's 43 1/2" long, which includes about 12" behind the reflective element that can be used as a handle. This could be trimmed if desired.
Each element is attached with some smaller oak pieces consisting of two short 1/4" boards, plus another short section of the same 3/4" square used for the boom.
The top block of oak is about 2 3/4" long with a notch formed in the middle to hold the element in place. The two flat pieces are about 1 1/4" by 3" and server to keep the elements in place and at a right angle to the boom.
There are two bolts with washers and wing nuts so everything can be loosened for disassembly. All hardware is stainless steel. The reflective and directive elements don't need to come completely apart, as they can be loosened a little and the elements slid into place. The driven element, however, needs to have the block completely removed so the coax feedline can be routed around the bolts and the wood block.