Author Topic: Some advice on straightening yew stave please  (Read 1227 times)

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Offline Ruddy Darter

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Some advice on straightening yew stave please
« on: August 03, 2022, 04:06:58 pm »
Hi all,
Would I be ok straightening on this knot ( and fill any gap that may occur?) I'm not sure how it will behave, I'll be bending away from  it, its 4 or 5 inches up from mid bow ( so a comparitvely static area) and will be 35mm X 32mm dimensions when I come to steaming it straight for a warbow/elb, . Or would it be advisable to steam an area a little north of the knot and have a kink a little up from the hand grip. Thanks for any advice,  I haven't had to deal with this before.
(I'll lose it on the back but some will remain on belly and side)
R.D.
« Last Edit: August 03, 2022, 04:15:38 pm by Ruddy Darter »
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Offline Ruddy Darter

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Re: Some advice on straightening yew stave please
« Reply #1 on: August 03, 2022, 04:08:47 pm »
One more...
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Offline Hamish

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Re: Some advice on straightening yew stave please
« Reply #2 on: August 03, 2022, 08:33:08 pm »
Steam bending a knotted area can be tricky, it can crack if you force it.

I would get the bow floor tillered( a relative term when dealing with warbows) before thinking about doing the correction.

Yes, use steam.

Offline George Tsoukalas

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Re: Some advice on straightening yew stave please
« Reply #3 on: August 03, 2022, 09:07:04 pm »
Why? If you clamp a string tip to tip does it fall on what would be the handle?

Jawge
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Offline Weylin

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Re: Some advice on straightening yew stave please
« Reply #4 on: August 03, 2022, 09:44:54 pm »
Steam bending a knotted area can be tricky, it can crack if you force it.

I would get the bow floor tillered( a relative term when dealing with warbows) before thinking about doing the correction.

Yes, use steam.

I agree with Hamish

Offline Ruddy Darter

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Re: Some advice on straightening yew stave please
« Reply #5 on: August 04, 2022, 12:57:19 am »
 Thanks for replies and glad I checked. O.k, I will avoid that area and do as suggested.
All the best,
R.D.
Mon arc, mon cœur. Gardez la foi!

bownarra

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Re: Some advice on straightening yew stave please
« Reply #6 on: August 04, 2022, 02:00:16 am »
Why? If you clamp a string tip to tip does it fall on what would be the handle?

Jawge

that doesn't really show anything useful. you need to wait until it is braced before making string line judgements.
It will crack if you try to bend it against that knot - think what the fibers are doing there!

Offline simk

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Re: Some advice on straightening yew stave please
« Reply #7 on: August 04, 2022, 03:24:44 am »
It anyways would be better to completly remove the knot, following the grain and work wirh what you have, if possible. Then the dry heat or steam correction will not be critical. Going for an Elb there will be slight movement all over the bow and I wouldn't trust it with such knot leftovers on the edge. Cheers
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Offline Ruddy Darter

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Re: Some advice on straightening yew stave please
« Reply #8 on: August 04, 2022, 03:58:23 am »
Thanks simk,
 I did see that done on a recent bow, (the billet bow I think), and I was pondering on that, I'll get it down near final dimensions and move over from it as much as I can. I got a fair amount to do, I'm getting the sapwood down a few rings too, so thinking way ahead on what options.
Many thanks,
R.D.
Mon arc, mon cœur. Gardez la foi!

Offline simk

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Re: Some advice on straightening yew stave please
« Reply #9 on: August 04, 2022, 04:39:28 am »
Little magic cheat: probably lift out that whole knot with a chisel, leaving the clean grain 🤗
--- the queen rules ----

Offline Ruddy Darter

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Re: Some advice on straightening yew stave please
« Reply #10 on: August 04, 2022, 04:50:41 am »
That looks great simk, I really like the look of knots done like  that...,  8)
I will remove what remnant of knot is left and follow the grain.
I'll view treating knots a little different now, thanks again all.  :OK
R.D.

Just added some pics....I got the centre down to dimensions and heatgun and oil just above and below the removed knot, I managed to get a  pretty good initial line up on handle, now to get it all down to dimensions. (Bottom pic the lower limb is closest on the left, wood marking the hand grip area and pencil marking position of knot prior to straightening, and lower limb is furthest on the right pic after straightening, I forgot to take the pic from the same end  ::).)
« Last Edit: August 08, 2022, 03:44:09 pm by Ruddy Darter »
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