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MR Copy Explodes on the tiller at 100#

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Del the cat:
Damn, probably down to pushing it too hard too quick, and an imperfect back*.
The tiller wasn't perfect yet, but I was thinking winch it back to 110# then really clean it all up a get the tiller spot on.
Caught it on video, I had the hard hat and safety glasses on.
http://bowyersdiary.blogspot.co.uk/2013/07/warbow-explodes.html
It was a bit experimental as it was a couple of old odd billets....still the splice was good :laugh:
Enjoy...
Studying the original video I can see the break starts dead centre on the back, probably propagating from the splice. This reinforces my view that a thin sapwood overlay over a splice helps prevent splinters lifting on a full compass bow. You might think I was working the centre too hard, but I was following Mary Rose dimensions and had actually left some extra timber there.
Del

toomanyknots:
That sucks so bad.  :'( Dang that thing exploded though, good thing you were wearing protection! Pretty smart idea really! Did you get clobbered with any bow shrapnel! I thought the tiller looked just fine.

WillS:
Man that's a shame, sorry Del! Really encouraging to see that the splice itself stayed solid.  Wish I was able to get to your place as i have piles of prepared billets but never tried splicing before and you clearly know your stuff!

Del the cat:
Cheers guys. I've been playing detective and I think I've spotted the actual culprit, by reassembling the centre section.
A small splinter that lifted by the splice where the sapwood had been rasped down to match either side of the join!
In the video you can see it cartwheeling off right as a faint blur just before it explodes.
Elementary my dear Watson!
Del

mullet:
Man, that does suck. But, if it is gonna break at least make it exciting.

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