Looks good! Just make sure your bladder is bigger than the shell of the wing, so the shell takes the pressure load. Otherwise, the hole for the dump or the elbow will stretch and result in a "catastrophic" failure (ask me how I know!).Thank you for all the info on what you have done! With your help, I have made my own and and super stoked with it! These pictures are my V2 Backplate and V1 Wing. I am in the process of making the next version of both! I am actually interested in making a bladder as well instead of using a pool toy, has anyone tried that as well?
In regards to a DIY Bladder, you might look at @raftingtigger 's thread on a DIY sidemount wing (no separate bladder, so the construction method should work for "just" a bladder):
DIY wing tutorial - very picture heavy.
Materials needed: ½ yard of vinyl coated 600 denier fabric. Available in full yards from Coated Fabrics for $7.99 per yard 2 yards of 3/4” nylon double folded bias tape. Roll Goods_ for $0.60 per yard Outdoor quality sewing thread. Recommend Gutterman Size 0 solid brass grommets and...
scubaboard.com
Respectfully,
James