Started on my 4B
aka 'boo back board bow today. White Cypress (Callitris columellaris) fence paling with locally available boo from the same hardware. All told it was probably $30 for the wood and grass and I should be able to get 2 bows from the cypress paling, and few more from the boo allowing for splits etc. Inspired by a few builds such as
https://ozbow.net/phpBB3/viewtopic.php?f=34&t=16184&p=168121&hilit=cypress#p168121.
Truth be told this is a complete experiment/new experience on my behalf. First time using 'boo backing, first time using this epoxy in a bow (used it plenty in wet composite layups), and first time using a vacuum to clamp timber - good ol' food saver this time, but I have a proper vacuum pump 4/5ths finished ready for service. Glued up flat, though I did play with clamping in some reflex to see if I can before sucking the vacuum down.
69" nock to nock, 1.25" wide through the middle tapering to ~5/8" at the tips with the limb tapering the last 20". 19mm thick at the handle tapering to 1/2" at the tips which is way too thick, pulling 50lb and yet to get to brace height. Modeled off plans I got somewhere (sorry can't remember to give credit). If you focus about 100m past the bow and after a few whiskeys, it might pass for an ELB