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Classical tentellone dimensions?
http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=9054		 Page 1 of 1
Author:  Marc [ Sat Oct 28, 2006 8:33 am ]
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Does 7mm thickness at base, 15 mm height, 9mm wide sound typical? How much space in between when gluing?
Author:  crazymanmichael [ Sat Oct 28, 2006 10:58 am ]
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spacing is about 1/16"..... er.....about 1.5mm, but your dimensions seem off. 9mm wide seems a bit wide to me. 6-7 mm seems more like it.
Author:  Marc [ Sat Oct 28, 2006 11:28 pm ]
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Thanks Michael, those dims sound very similar to my kerfing dimensions. Marc39019.311712963
Author:  crazymanmichael [ Sun Oct 29, 2006 2:39 am ]
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that's all the tentellones are, unconnected bits of kerfed linings. instead of just sawing part way through, saw all the way though.
Author:  Marc [ Sun Oct 29, 2006 1:02 pm ]
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Yes your right but sometimes they are wider than typical kerfing. Cumpiano suggest a width of 3/8" for tentellones, that's over 9mm. Other sources I have found since I made this post suggest widths of 9 to 10 mm with as much as 4mm spacings between.

Kerfing dimensions are so tight it would take probably more patience than I have to do them one by one.

Author:  jfrench [ Mon Oct 30, 2006 5:05 am ]
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I am using 7mm wide x 14mm tall x 6mm thick, but this can vary depending on the purfling scheme.

I usually space them about 4mm apart around the perimeter of the soundboard.

In the upper bout I usually butt them right against eachother.jfrench39020.5469212963
Author:  CarltonM [ Mon Oct 30, 2006 8:44 am ]
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Marc,

I know it can make you crazy, but I don't think you're going to get a concensus on spacing. I've seen some with what looks like an even 1/8" or more all around, and I've seen some with no gap all around, and everything in between. It depends on the builder's philosophy about the coupling of the sides and soundboard; so, first you've gotta come up with a philosophy.    That was one of the major benefits of a traditional apprenticeship--you weren't allowed to think for yourself until you were out of there. By then, you knew if the Maestro was right or wrong.
Author:  Marc [ Mon Oct 30, 2006 9:06 am ]
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Thanks jfrench, are those dimensions similar to what Jose and Liam Romanillos use? Do you glue them with fish glue? BTW your website is really nice and the your guitars look immaculate, original rossettes, Vee-joint heads, very nice. I want to learn that Vee-joint.   
Author:  Marc [ Mon Oct 30, 2006 9:07 am ]
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Thanks Carlton, Your right, I'm finding that out. Every source has a different idea.
Author:  jfrench [ Tue Oct 31, 2006 2:47 am ]
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Thanks Marc.

If you're interested in doing the V-joint, I did a bit of a tutorial for the foum a while back. The search function won't let me find it right now for some reason though, and I don't think they put it anywhere.

I glue the tentellones with fish glue, just press it into place for a second or two, put glue on the next one then apply pressure to both for a few seconds and keep moving on like that. The fish glue tacks up pretty fast and does a good job.

I am doing this right now actually, and I noticed I tend to use only about 3mm between tentellones (rather than the 4 I previously stated).

Jose and Liam do it a bit differently. They have two sizes ot tentellones and alternate between them - big/small/big/small/big/small.
Author:  jfrench [ Tue Oct 31, 2006 2:53 am ]
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Here's the V-joint discussion: V-Jointed Head
Author:  Colin S [ Tue Oct 31, 2006 3:55 am ]
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Can I just say that Joshua's tutorial on cutting V-joints works like a dream. I have used it several times on some practice wood, and will be using V-joints from now on. The key point I found is to use a good marking knife to do the lay-out. This gives you well defined edges to chisel up to.

By the way Marc, If I want to spent half an hour drooling time, I just go on over and look at Joshua's web site. I believe he is a true world class guitar builder. He has skills that we can only dream about. If (by the time I get to retire my day job) I haven't approached that level then I guess I'll just have to order one from him (Cypress with tornavoz I think). Mmm, think I'll go look at his site.

Colin
Author:  Shawn [ Tue Oct 31, 2006 8:16 am ]
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I use the same Romanillos staggered big then small blocks.

One clarification... the name is NOT tentellones...it is dentellones as per Jose Romanillos. This error in name came about based on an article years ago in a guitar journal in which the author used the name tentellones. Dentellones makes more sense in that the Latin word dente means tooth.

Latin: "dentes" = teeth (Dentils supposedly resemble a row of teeth.) This is why Dentil moulding refers to A small rectangular block - a tooth-like cube -used in a series forming a molding under a cornice.

The "dentellones" I use are 10mm high by 8mm wide by 10mm deep for the big blocks and 8mm high by 8mm wide by 8mm deep for the small blocks. The face of the blocks are angled with the ledge at the top of the block being 2mm front to back. The reason why Romanillos alternates the blocks like this is just to add eye appeal because if you use all one size block any irregularity (such as when a block meets a brace) really show up whereas if the are alternating your eye doesnt tend to see the difference.

I used to use HHG for the dentellones but since the Romanillos course have switched to fish glue.
Author:  Marc [ Tue Oct 31, 2006 9:07 am ]
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Thanks Joshua, the tutorial is great, my next neck will have a Vee-joint.
Author:  Marc [ Tue Oct 31, 2006 9:18 am ]
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[QUOTE=Colin S]
...
By the way Marc, If I want to spent half an hour drooling time, I just go on over and look at Joshua's web site. I believe he is a true world class guitar builder.
...
Colin[/QUOTE]

From what I see, I have to agree. Also, appears he could justifiably raise his pricing a few notches.
Author:  Marc [ Tue Oct 31, 2006 9:21 am ]
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[QUOTE=Shawn] I use the same Romanillos staggered big then small blocks.
...
The reason why Romanillos alternates the blocks like this is just to add eye appeal because if you use all one size block any irregularity (such as when a block meets a brace) really show up whereas if the are alternating your eye doesnt tend to see the difference.
...
[/QUOTE]

Thanks Shawn, I like that idea, I'm going to try it.
Author:  jfrench [ Tue Oct 31, 2006 12:04 pm ]
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Colin - thanks for the vote of confidence (misplaced as it may be!)... keep me updated on the V-joint goings on. I've got some pictures to send you, I haven't forgotten.

Shawn, interesting clarification there. Thanks for that!

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