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PostPosted: Sun Feb 21, 2021 7:42 am 
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Walnut
Walnut

Joined: Thu Mar 28, 2013 10:12 am
Posts: 13
Hello all, I’m hoping to get some advice on using Alaskan Yellow Cedar for my next guitar top. So far my deflection testing is telling me that this top is as stiff as a lot of the Spruce I’ve used in the past.

Do you think there is any reason not to treat this top like I would Spruce

Thanks


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PostPosted: Sun Feb 21, 2021 9:27 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Sun Mar 30, 2008 8:20 am
Posts: 4700
Looking at the "average" numbers for weight, hardness, and elastic modulus my guess is it would fall somewhere between Norway spruce and mahogany. It has a weight and hardness similar to Douglas fir and an elastic modulus similar to Norway spruce or mahogany (on average).
But those are - average - values.
Do you measure stiffness at a given thickness or a given weight?


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PostPosted: Sun Feb 21, 2021 12:05 pm 
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Koa
Koa
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Joined: Wed Jan 24, 2007 2:45 pm
Posts: 945
Location: Calgary, Canada
Status: Amateur
I've only ever built a tenor ukulele with it. Top, back and sides. Bends like butter. I was surprised at how tough the stuff is. You can pretty much bend a top into a cylinder when bending across the grain. Not quite, but it feels like you could.


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PostPosted: Sun Feb 21, 2021 2:08 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 4988
Location: Virginia
Funny I was just going trough my inventory this morning and came across a few yellow cedar sets I bought and forgot about. The stuff smells great! If you do deflection testing, as I do, then I would simply build to your target deflection of spruce and that should get you there.


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PostPosted: Sun Feb 21, 2021 5:48 pm 
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Cocobolo
Cocobolo

Joined: Sat Mar 09, 2019 4:50 pm
Posts: 389
Location: Goodrich, MI
First name: Ken
Last Name: Nagy
City: Goodrich
State: MI
Focus: Build
Status: Amateur
In the last year I made a violin with an Alaska Yellow Cedar top, and one with a Port Orford Cedar top. Both seemed plenty stiff enough, the Alaska maybe had more sideways flex. I haven't strung them up, but if you took those tops, and one I made from Sitka, and one from Englemann, I doubt that you could tell which was which blindfolded. The would feel and sound about the same.

If you know how it flexes, you should get close, and then fine tune.

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Why be normal?


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PostPosted: Sun Feb 21, 2021 7:17 pm 
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Contributing Member
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Joined: Sun Feb 17, 2013 4:58 pm
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First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
I built an entire guitar out of it - top, back, sides and neck. It turned out quite well, very bright. It is an early Gibson L-0, 24.9 scale, 13 frets clear. I am an amateur and don't do top testing - the top is .11" thick with conventional Martin scalloped X bracing. Here is my daughter taking it for a spin on an iPhone.

https://www.youtube.com/watch?v=6NUD-bdNR0g

Ed m


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PostPosted: Sun Feb 21, 2021 9:37 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
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Location: Virginia
Dang! Thats cool Ed. Bet it smells great too!


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PostPosted: Mon Feb 22, 2021 9:31 am 
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First name: Ed
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Here is something else that AYC does - I set the partially completed guitar on a window seat and when the sun was setting I saw this. I bet most spruce does it too, but we never know because it is the top and we don't see the inside. i guess we can put a light inside to see the braces.

Ed M


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PostPosted: Mon Feb 22, 2021 8:10 pm 
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Koa
Koa
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Joined: Wed Jan 24, 2007 2:45 pm
Posts: 945
Location: Calgary, Canada
Status: Amateur
Ruby50 wrote:
Here is something else that AYC does - I set the partially completed guitar on a window seat and when the sun was setting I saw this. I bet most spruce does it too, but we never know because it is the top and we don't see the inside. i guess we can put a light inside to see the braces.

Ed M

Great looking guitar Ed. Yellow cedar is different stuff but it sure is easy to work with. Here's the tenor uke I made with it quite a few years ago. Still sounds great.
Image



These users thanked the author Darrel Friesen for the post: Pmaj7 (Tue Feb 23, 2021 2:15 am)
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PostPosted: Mon Feb 22, 2021 9:37 pm 
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Joined: Sun Feb 17, 2013 4:58 pm
Posts: 1393
First name: Ed
Last Name: Minch
City: Chestertown
State: MD
Zip/Postal Code: 21620
Country: United States
Focus: Build
Status: Amateur
Great looking uke Darrell

Ed M


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PostPosted: Tue Feb 23, 2021 10:03 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Mar 06, 2006 10:10 pm
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Location: Argyle New York
First name: Mike/Mikey/Michael/hey you!
Last Name: Collins
City: Argyle
State: New York
Zip/Postal Code: 12809
Country: U.S.A. /America-yea!!
Focus: Build
Status: Professional
I love it!
top B & S for Flamencos!
Great wood to work with!
So aromatic you want to take a taste of it!

Stable! lite in weight .

Mike

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PostPosted: Wed Feb 24, 2021 7:29 am 
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Walnut
Walnut

Joined: Thu Mar 28, 2013 10:12 am
Posts: 13
Thanks for the help all, this is one of the stiffest tops I've worked with in a long time. I'll try to post some pics of the Guitar when it's done.

Thanks again


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