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  #61  
Old 02-02-2019, 09:21 AM
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Guitars44me Guitars44me is offline
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Smile A worthy digression!

"Wow, what a digression...hopefully we'll be back to the build soon! Thank you all for your kind indulgences...hang in there, Tim!"

Very informative digression! I know there are other Pernambuco guitar threads here, so it may well help someone.

Tim, sending good thoughts for those difficult bits! You folks stay warm, too...

Cheers

Paul
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  #62  
Old 02-02-2019, 09:45 AM
GaultierRedon14 GaultierRedon14 is offline
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I certainly hope it is helpful to other AGFers and can be a future reference for people searching for details on this rather arcane issue!
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  #63  
Old 02-02-2019, 07:33 PM
GaultierRedon14 GaultierRedon14 is offline
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Default Your Pernambuco guitar is NOT regulated by CITES

So there, the issue is settled. Upon further instruction from other sources who are intimately familiar with CITES, the answer is clear--if you have a guitar that includes any Pernambuco, it is NOT regulated by CITES. That means you don't need any documentation whatsoever, to ship it or travel with it internationally. Period.

I hope this may be helpful to others who have a Pernambuco instrument!
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  #64  
Old 02-03-2019, 05:40 PM
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My understanding is that finished products that have materials listed in Appendix II of CITES need an export permit if being shipped by a North American manufacturer (and an import permit if the recipient is in Europe or some countries in Asia), but once the owner has taken receipt of the instrument, he/she can travel with it without any CITES implications, under the personal exemption clause.
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  #65  
Old 02-05-2019, 12:26 PM
GaultierRedon14 GaultierRedon14 is offline
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Quote:
Originally Posted by David Wren View Post
My understanding is that finished products that have materials listed in Appendix II of CITES need an export permit if being shipped by a North American manufacturer (and an import permit if the recipient is in Europe or some countries in Asia), but once the owner has taken receipt of the instrument, he/she can travel with it without any CITES implications, under the personal exemption clause.
Thank you, David.
The above may all be true generally speaking, but I just wanted to clarify, as documented in my original post on this matter, that finished Pernambuco products are exempt. (See CITES Appendix II, Annotation #10. Also, see the details of the 2007 statement issued by FWS. There are links to both of these in my original post.)
I wasn't sure if you just wanted to share this information as a general rule for Appendix II, or if you meant to imply that it also pertains to finished Pernambuco products.
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  #66  
Old 02-06-2019, 06:45 AM
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Well after a week of failures bending the Florentine bindings I was about ready to pull my hair out. I've had issues bending some stubborn ebony and other highly figured woods but NOTHING as compared to the frustrations I've had bending this Pernambuco. This is only a small sampling of the failed attempts:










I took last weekend off for a much needed break. I turned to an old fashioned sketch pad to put some thoughts down on paper. When you bend wood over a form, hot pipe or any other object of your imagination, the inside of the wood fibers are in compression while the outside of the wood fibers are in tension. This Pernambuco wood ALWAYS fractured on the outside of the bend which was in tension so I imagined I needed more pressure on the outside of the wood. The wood was also becoming very brittle in my previous bending attempts. I had to find a way to add more pressure to the outside of the wood while reducing the heat induced embrittlement in the wood in the heat effected bending zone.

Bending wood over a heating blanket poses some problems because the entire piece of wood is being heated at once, which works well for the majority of woods, but not in my case. I needed a way to control the heat in a smaller and more localized area. Bending wood over a smaller hot pipe allows one to apply heat in a much smaller localized area but its difficult to apply an even and higher force to the outside of the wood. I had my best results bending over a hot pipe but I couldn't apply enough force to the wood. The Pernambuco would get to the yield point and begin to bend and then it would just snap whenever IT decided to.

Finally the light bulb went off and I came up with a design that would allow me to position the wood vertically, apply heat only where I needed the wood to yield during the bend and also allow the rising heat and steam to preheat the wood ahead of my bend, without drying or over heating the wood. This is what I came up with on paper and later built a prototype in the shop Sunday afternoon.











It uses heavy springs at both ends of the stainless steel outer bending slat which provides plenty of outer force on the wood and a constant and controlled downward pressure on the wood fibers during bending. I bent the wood over a smaller silicone heating blanket but the blanket only comes into contact with the wood when its being coaxed around the form. I am happy to report that it worked like a charm on my first beinding attempt.










Don't worry, this is not blood! Pernambuco bleeds color when water is applied to it...





















Success! ... FINALLY!










Thanks again to those of you who sent words of encouragement and prayers our way. They were certainly appreciated!
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  #67  
Old 02-06-2019, 10:10 AM
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Tim and Mary are a little like Sonny and Cher, but only kind of yet not really. So I sing ... and the beat goes on.
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  #68  
Old 02-06-2019, 01:17 PM
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Very clever Tim
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  #69  
Old 02-06-2019, 05:40 PM
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Quote:
Originally Posted by j. Kinnaird View Post
Very clever Tim
Thanks John. I figured I’d share it in case anyone else encounters some cantankerous Florentine bindings that refuse to bend.
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Last edited by Tim McKnight; 02-06-2019 at 07:57 PM.
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  #70  
Old 02-07-2019, 08:47 PM
GaultierRedon14 GaultierRedon14 is offline
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Default More work in progress...













Pre-fitting neck for bridge placement:

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  #71  
Old 02-07-2019, 10:05 PM
Loggerenguitars Loggerenguitars is offline
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Quote:
Originally Posted by GaultierRedon14 View Post












Pre-fitting neck for bridge placement:

Persistence and perseveranceis definitely a big key...you did it Tim!!! WOW, this guitar will be worth it for sure!!! Love it!!
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  #72  
Old 02-07-2019, 10:49 PM
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The purflings look great Tim!! Very nice touch. Can't believe the effort behind this.
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  #73  
Old 02-07-2019, 10:56 PM
GaultierRedon14 GaultierRedon14 is offline
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If life gives you lemons, make lemonade.
If the bindings won't bend, make one of these.
A little prayer for inspiration probably doesn't hurt, either!

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  #74  
Old 02-08-2019, 04:33 PM
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That is a lovely nest of miters around the neck area. To Quote Vader, “impressive”
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  #75  
Old 02-09-2019, 08:24 AM
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What an ingenious bending jig (and I only half understand what's going on with it!)
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