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Tension Cracks in Sinew Backing
superdav95:
Those cracks are just excess glue. I would be very surprised if your sinew failed here. My experience is that the wood will fail first. The sinew may lift off or pull away or delaminate from the wood due to a sizing issue or something but the sinew is crazy strong. If the sinew was of good quality and not pounded to death or over heated it will be fine. I would consider also making yourself a stringer if you don’t already have one. Here’s a few pics of one I made last year. I got the idea to make my own like this from bowEd on here. At the time I was neck deep into a highly reflexed bow and needed a specific stringer for this bow. Here’s a couple pics. Hope this helps ya. Good luck.
Marin:
Well I was able to figure out a way to string it at low brace. These reflexed-recurved bows are pretty hard to string at low brace without them flipping on you, so I first put it on the long string, then tied the shorter string before taking it off of the long string and having it partially pulled back with this shorter string. It's thus quasi-low braced, as otherwise it would flip on me.
Tiller still seems good, though would like second opinion if you guys think the recurves should be bending more at this point or not. I wouldn't be surprised if they are too stiff. What do you guys think?
Also, in pulling it yesterday on the long string to get these photos, I saw that more cracks on the glue formed on top of the cracks that were there. Don't think this indicates that its bending more in this area, especially since these form in the area around the handle only on the long string, and I keep checking with my gizmo but the bend in this area is not more than the bend on the other limb in the same respective area.
superdav95:
Looks good to me. Bend looks good too. Ya those cracks are scary looking but sinew just doesn’t break that way that I’ve ever seen if that helps ya.
Marin:
Thanks, I'll just assume I must've put too much glue in these spots where its cracking
As to the tiller, so you think the recurves are bending enough for this amount of bend? I don't think I mentioned it, but this bow will not be a contact recurve but a working, non-contact recurve.
superdav95:
Ya Ed I made that assumption too. It looks good so far to my eye. We won’t know what this thing will do till you bend it a little more. The first few bending pics it’s almost to brace height and from the pic it’s pretty close to being contactless on the recurves. It’s hard to always tell from pics. I’d be hesitant to remove any material till you bend a little more past where you’ve already gone. I suspect you’ll see those tips working a little then. Best of luck.
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