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Author Topic: Crysals?  (Read 3284 times)

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Offline jandersson

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Crysals?
« on: June 14, 2016, 10:46:28 pm »
I'm working on a black walnut bow and noticed something on the belly that got me concerned. I had straightened it with steam a week ago and started to exercise the bow on the tree. When I later looked at the belly it had this white pattern on most of the limb and on one spot when the light fell on it in a certain way there was a few darker lines. When I look at the darker lines from an other angle it just looks like the white pattern also if I run my nail over it I don't feel anything. Is this crysals?

Sorry, forgot the pics. Dark lines are in the kink on the left limb.

Thanks!



« Last Edit: June 14, 2016, 10:50:01 pm by jandersson »
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Offline bubby

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Re: Crysals?
« Reply #1 on: June 14, 2016, 10:47:44 pm »
Need pics,
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Offline jandersson

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Re: Crysals?
« Reply #2 on: June 14, 2016, 10:54:52 pm »
bubby,
I just saw your reply in the other thread. So you don't necessary have to feel a crysal?
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Offline bubby

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Re: Crysals?
« Reply #3 on: June 14, 2016, 11:01:47 pm »
Rub a little finish on it and let it dry, take a new pic
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failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline jandersson

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Re: Crysals?
« Reply #4 on: June 14, 2016, 11:06:27 pm »
Tung oil, poly urethane, does it matter?
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Offline bubby

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Re: Crysals?
« Reply #5 on: June 14, 2016, 11:11:38 pm »
Doesn't matter, it seems like when i do get chysals i see them once some finish is on
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failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline jandersson

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Re: Crysals?
« Reply #6 on: June 14, 2016, 11:24:42 pm »
Hmm.. there was stains on the wood after steaming that had similar edges, could it be that? I thought crysals would have more of a "break"?


« Last Edit: June 14, 2016, 11:36:23 pm by jandersson »
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Offline Josh B

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Re: Crysals?
« Reply #7 on: June 15, 2016, 01:39:41 am »
I don't think those are chrysals.  Looks more like indentations in the grain that have been sanded out.  No guarantees on that though.  Josh
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Offline Del the cat

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Re: Crysals?
« Reply #8 on: June 15, 2016, 02:30:20 am »
You will know when you find a chrysal.
They are straight lines usually at an angle and you can feel the raised ridge with your fingernail.
The look like hairs across the belly.
There is a pic on this post of my blog... not a great pic, but click on it to see it full size.
http://bowyersdiary.blogspot.co.uk/2010/11/shooting-in-hazel-bow.html
And here's a post with some real obvious ones (the bow was unseasoned and over drawn just for the heck of it >:D)
http://bowyersdiary.blogspot.co.uk/2010/06/plenty-to-be-getting-on-with.html
Del
« Last Edit: June 15, 2016, 02:35:32 am by Del the cat »
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mikekeswick

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Re: Crysals?
« Reply #9 on: June 15, 2016, 02:45:55 am »
Also the really small ones will be easier to feel/see with the bow strung.
Anyway I don't think they are chrysalis - just a spot where the walnut has been 'squeezed' a bit. Stains will show up a chrysal like a lighthouse on a dark night.
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Offline bushboy

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Re: Crysals?
« Reply #10 on: June 15, 2016, 07:08:29 am »
Looks like small tension fractures to me.likely happened when you tried to straighten out the kink.i have an old bow with some and it doesn't seem to affect it.then again I don't shoot my bows all that much before starting another.
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Offline bubby

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Re: Crysals?
« Reply #11 on: June 15, 2016, 08:21:08 am »
Continue on with that bow i think u are alright
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failure is an option, everyone fails, it's how you handle it that matters.
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Offline SLIMBOB

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Re: Crysals?
« Reply #12 on: June 15, 2016, 08:29:48 am »
Those to me look like the little tension cracks you get from heat bending when the wood has not plasticized enough.  Sometimes just a tiny spot that has stretched just to the point of rupture but not beyond.  Doesn't look as though you heat bent anything though.
I see that bushboy said the same.
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Offline BowEd

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Re: Crysals?
« Reply #13 on: June 15, 2016, 08:29:59 am »
Looking at it I'm leaning towards it not being a chrysal.Like said a finish or stain of some sort or even a quick wipe of laquer thinner on it would reveal it for sure.
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Offline jandersson

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Re: Crysals?
« Reply #14 on: June 15, 2016, 08:45:57 am »
That doesn't sound to bad. I'm still at just 14" and have 14" to go so I'll keep a close watch on that area and will be back if anything change.
Del: What you got there seems very different to what I have which gives me some hope!

Thanks guys!
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