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 Post subject: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 3:54 am 
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Cocobolo
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Anyone know how to do this? I’m waiting on guitars 2&3 right now so I’ve haven’t had time to do an arm bevel yet. I’ve watched videos of how Kent Everett does it, but it seems this is done a different way. The bevel wood would seemingly need to be thinner.


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 Post subject: Re: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 6:49 am 
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That's the Ryan's "flutes". He has heavily invested in CNC work.

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.


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 Post subject: Re: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 2:06 pm 
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I wonder if having your arm on the arm bevel would greatly reduce the effect... beehive

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These users thanked the author sdsollod for the post: Hesh (Mon Nov 27, 2023 5:28 am)
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 Post subject: Re: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 6:15 pm 
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sdsollod wrote:
I wonder if having your arm on the arm bevel would greatly reduce the effect... beehive


Also my first thought.

Might not suit anyone who plays in classical position.


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 Post subject: Re: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 6:29 pm 
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Cocobolo
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Colin North wrote:
That's the Ryan's "flutes". He has heavily invested in CNC work.


Makes sense. I have a CNC, but don't know how that's done.

Maybe severals laminations can be cut and molded/glued together? I believe the Kent Everette method would leave too thick of a block of wood to work. I can't see inside the Ryan sound port, but I believe it would need a uniform and thin arm bevel to look right.


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 Post subject: Re: Arm bevel sound port
PostPosted: Sun Nov 26, 2023 7:27 pm 
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sdsollod wrote:
I wonder if having your arm on the arm bevel would greatly reduce the effect... beehive


The holes sit far enough forward that the left arm doesn't block them. I took a look at three videos of Ryan guitars with those holes being played, including one in classical position, and the holes were clear of the players' left arms.

Has anyone here played one? I wonder how the "flute" holes compare to more standard sound ports in the upper bout on other guitars in terms of sound.

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 Post subject: Re: Arm bevel sound port
PostPosted: Mon Nov 27, 2023 12:20 pm 
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Being further from the main sound hole they would raise the 'air' pitch more for a given hole area. Also they would 'hear' different internal resonances than the main hole, so the sound at the ports would be less like what people in the audience hear.

Structurally it's plausible that he has cross braces in the bevel between the ports, and those could plug into liners along the top and bottom edges. I've never seen one 'live', so I can't say for sure.


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 Post subject: Re: Arm bevel sound port
PostPosted: Wed Dec 06, 2023 5:13 pm 
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guitarmaker78 wrote:
Anyone know how to do this? I’m waiting on guitars 2&3 right now so I’ve haven’t had time to do an arm bevel yet. I’ve watched videos of how Kent Everett does it, but it seems this is done a different way. The bevel wood would seemingly need to be thinner.


Kevin Ryan posted a short clip on Instagram of himself filing the holes. You can see how thick the wood is under the bevel.

https://www.instagram.com/p/C0WttTfyYce/?hl=en

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These users thanked the author J De Rocher for the post: Kbore (Wed Dec 06, 2023 6:50 pm)
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