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Crossbows - Everything about Building, Modding, and Using your Crossbow Gear

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2 posters

    Backing my prod

    Daniel Levesque
    Daniel Levesque
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 65
    Join date : 2016-12-06
    Location : Quebec, Canada

    Backing my prod Empty Backing my prod

    Post by Daniel Levesque Mon Jan 30, 2017 7:02 am

    Hello everyone !

    I'm in the process of making my 3rd attempt for a wood prod (hickory). I'll be over with the pre-tillering soon enough, I'll steam bend it with about 3 to 4 inches brace then, I'll apply the sinew/hide glue.

    My prod is 37,5 inches ntn, 2 inches x 3/4 at the center and 1 inches x 3/8 at tip. I bought some hide glue and 6 back sinew from 3 rivers archery. Dp you think it's gonna be enough, I have my doubts aboput that. I'd like the sinew to be about 1/4 at the center and 1/8 or so at the end.  How much do you think will be needed ?

    Thanks in advance !
    OrienM
    OrienM
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    Workshop SavvyDid you see my tool collection?

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    Backing my prod Empty Re: Backing my prod

    Post by OrienM Mon Jan 30, 2017 7:16 am

    I'm thinking you're going to need some more sinew...I'm not sure how back sinew compares to the leg sinew I use, but my last prod used 12 elk leg sinews. Sinew shrink a lot as it dries...the freshly-applied backing needs to be put on about 1/2" thick, in order to shrink down to 1/4" as it cures.

    Another advice, don't try to pre-tiller too much, just a general sense of bending evenly is fine. Once the sinew back is on, the risk of the prod exploding during tillering goes way down.
    Daniel Levesque
    Daniel Levesque
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 65
    Join date : 2016-12-06
    Location : Quebec, Canada

    Backing my prod Empty Re: Backing my prod

    Post by Daniel Levesque Mon Jan 30, 2017 8:21 am

    Thanks a lot for the advice OrienM, I'll definitely buy more sinew (I have 6, I'll buy 8 more). Back sinew is bigger than leg sinew though 12 inches or so compare to 6 inches I think ? Anyway, having some extra won't hurt.

    Oh and by the way, for now, my prod is only tapperd 2 inches wide at the centre to 1 inche wide at tips. I didn't tiller it 3/4 thick center and 3/8 thick to the tips yet, it's only what I intend to do.

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    Backing my prod Empty Re: Backing my prod

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