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    invisible joints in bone spine-inlay

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    stuckinthemud1
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    Post by stuckinthemud1 on Thu Sep 13, 2018 5:32 am

    Anyone able to advise on achieving an invisible joint between the bone pieces that make up the spine inlay on an early gothic style crossbow??
    Thanks in advance,

    Andrew
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    Post by Geezer on Thu Sep 13, 2018 3:11 pm

    The expert on getting the bone joints to fit perfectly would be my very-picky journeywoman, Mary Ellen Burdwood, known here as 'Lightly' when she bothers to check in.  She's much better at getting tight fit than I.  However, I do have some observations.  First, real bone/ivory has a grain.  To get a reasonably invisible joint, the grain needs to line up.  Second, in most cases, medieval bows I have examined avoided making square joints right across the stock.  They're usually angled joints, either simple scarf-joints, or chevron joints, where one piece of bone comes to a point and the next is forked to take the point.  It's tricky getting the bits to fit right, but if done carefully, it will result in a very satisfactory and practically invisible joint that pleases everybody. Geezer. :-)
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    Post by stuckinthemud1 on Thu Sep 13, 2018 4:09 pm

    I'm afraid I am pretty rubbish at getting perfect glue-lines but a chevron might at least be visually pleasing, thanks Geezer, I think I'll give it a go  Very Happy
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    Post by stuckinthemud1 on Wed Sep 19, 2018 12:39 pm

    Thanks Geezer, this is what I ended up with

    invisible joints in bone spine-inlay 20180919_192302

    I was thinking of using cascamite to fix them in place as the white finish on the glue should be near invisible and it is gap-filling. You can see where I really struggled to carve the edges of the cavity tight enough. I may well end up running a black edging strip in paint to 'frame' the veneers, very period  Wink Any suggestions?
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    Post by Geezer on Wed Sep 19, 2018 12:43 pm

    I think it looks great, and the black edging would be a nice touch.  geezer.

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