Author Topic: mountain ash?  (Read 10793 times)

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Offline terence pinder

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mountain ash?
« on: May 27, 2008, 01:49:23 am »
anyone ever use mountain ash?

Offline Pat B

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Re: mountain ash?
« Reply #1 on: May 27, 2008, 01:51:20 am »
I have seen some beautiful bows made with Mountain Ash(Rowan). I've never made one  but there were a couple posted a few years ago. Pat
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Fundin

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Re: mountain ash?
« Reply #2 on: May 27, 2008, 08:23:10 am »
Great bowwood, very easy to work with sharp tools, almost unbreakable. density about 0.6. Beautiful dark heartwood, but tends to grow in spirals. Works well with heat treating.

Offline Hillbilly

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Re: mountain ash?
« Reply #3 on: May 27, 2008, 08:36:07 am »
The European mountain ash has a long history of use for bow wood, and like Pat said, the American one makes some nice bows, too. It grows at high elevations in my area, but I've never gotten a chance to cut any. I'd like to give it a try some day if I can find a good piece, it tends to be short, crooked, and twisty around here.
Smoky Mountains, NC

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Offline david w.

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Re: mountain ash?
« Reply #4 on: May 27, 2008, 12:17:35 pm »
I think Finnish Native uses alot of rowan
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a finnish native

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Re: mountain ash?
« Reply #5 on: May 27, 2008, 02:38:06 pm »
Indeed I do use a lot of Rowan (mountain ash). Here are two bows that I made out of Rowan http://www.primitivearcher.com/smf/index.php/topic,4232.0.html
There are a few things that you have to remember though: Rowan is not as good in compression as it is in tension BUT it may fail from the back also. Keep the belly of the bow flat and try to have as much limb working as possible. I personally prefer the gull wing design for Rowan, but the standard D profile is nice also. both profiles are presented in that link of mine.
When selecting Rowan for bows, try to get a nice straight piece that has thick rings. The thicker the better. Ring chasing is hard compared to ash or Osage, because it's hard to see where one ring ends and another begins, but it can be made easier by staining the wood temporarily. I prefer to use the ring I get from underneath the bark, but if it seems thin compared to the other rings I prefer to chase it. A tree that is as thick as your wrist should do just fine.
About drying: I prefer to de bark my tree trunks right away, because they come off nicely when fresh. Then I split the log or shape it to the dimensions of my bow BY THIKNESS. The tapering is best to do later. Cut the width of the bow so that the limb is as wide as the widest spot will be in the bow when finished. A month of drying should do for a roughed out stave. If you want a specific design (for example a Reflex deflex) press the stave to form after roughing it out and then let it dry in form. Rowan holds it's shape best if this in done.
Steam, boiling and dry heat are good for bending the wood to forms such as the recurve form ect.
Oh and one thing still: don't push the wood over it's limits.I would say that 60# is the comfortable poundage maximum for standard sized bows made from Rowan.
And if the bow starts to take set while tillering you can add reflex with dry heat. This will obviously increase the poundage also. And still a bit of something about the dimensions on Rowan bows: I like to make my bows 2.3 times longer than my draw lenght, so a 60" bow would have a 26" draw. Always determin the draw lenght by the lenght of your bow. never do the opposite, except if the bow is longer than needed.

Offline Marc St Louis

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Re: mountain ash?
« Reply #6 on: May 27, 2008, 04:52:03 pm »
It actually depends on where you are.  The Mountain Ash that grows here grows in low lying areas, is a very soft wood and is not suitable for making bows
Home of heat-treating, Corbeil, On.  Canada

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Offline Hillbilly

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Re: mountain ash?
« Reply #7 on: May 27, 2008, 06:33:01 pm »
Marc, down here we're at the extreme southern limit of its range, so it only occurs above 5,000 feet elevation or so-up where you start seeing spruce and fir trees and the rest of the Canadian-zone plants.
Smoky Mountains, NC

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Offline Pat B

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Re: mountain ash?
« Reply #8 on: May 28, 2008, 02:00:51 am »
...and you could spend a day looking and not finding a piece long or straight enough to build a bow.  Pat
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

a finnish native

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Re: mountain ash?
« Reply #9 on: May 28, 2008, 06:14:43 am »
at least the one that  grows on the arctic circle is suitable. I belive its latin name is Sorbus Acuparia.

Offline DanaM

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Re: mountain ash?
« Reply #10 on: May 28, 2008, 11:14:23 am »
Scoped out some yesterday at lunch, today at lunch I have my bow saw ;) :)
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Offline terence pinder

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Re: mountain ash?
« Reply #11 on: May 29, 2008, 12:59:04 am »
my mom has several growing in the yard, now i just have to wait until she goes to church on sunday so i can check them out >:D