It's now covered with deerskin, a pigskin grip, and 'synthetic sinew' holding everything on. I can see that I tapered the tips too much, though, because they're bending enough below the siyahs to be near collapse. With a 40 pound weight at full draw I should have tapered them less. I'll reinforce the tips, reduce the initial bend by lengthening the string, or both. It should be fine if I drop it down to around 30 pounds.
A lot of good information and how-tos from this guy:
https://www.youtube.com/channel/UC_U...gKHN_A-iTAwZbg