I have found that mahogany darkens faster when exposed to sunlight.
Bob
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| Cocobolo color help needed! http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=41777 |
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| Author: | Michael Anthony [ Mon Oct 28, 2013 9:13 am ] |
| Post subject: | Cocobolo color help needed! |
Okay lads and ladies, I need help with coloration. I'm working on 2 cocobolo dreads and after re-sawing the wood for the backs I ended up with very different colors than when I started. Question: How to I get the 'orange-looking' cocobolo back to the 'brown/purple-looking' state from which it started? Attachment: IMG_1274.1.jpg Attachment: IMG_1275.3.jpg Thanks in advance!! |
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| Author: | Goodin [ Mon Oct 28, 2013 9:41 am ] |
| Post subject: | Re: Cocobolo color help needed! |
Have you sanded yet? The colors should match up after sanding. Cocobolo will oxidize over time, so the freshly opened up surface will always be lighter. If you sand the old oxidized surface it should lighten up to match the fresh surface. Edit: oops, realizes I didn't really answer your question. What James and Todd said below. |
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| Author: | James Ringelspaugh [ Mon Oct 28, 2013 9:41 am ] |
| Post subject: | Re: Cocobolo color help needed! |
Time and exposure to air will remove the purples. |
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| Author: | grumpy [ Mon Oct 28, 2013 12:39 pm ] |
| Post subject: | Re: Cocobolo color help needed! |
Just keep building the guitar; time will even-out the coloring for you... |
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| Author: | emoney [ Mon Oct 28, 2013 4:57 pm ] |
| Post subject: | Re: Cocobolo color help needed! |
+1 on the "it will do all the work". I have some I've used for fretboards that started out BRIGHT orange/red and are now a nice, even "brownish". |
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| Author: | itswednesday14 [ Tue Oct 29, 2013 12:15 am ] |
| Post subject: | Re: Cocobolo color help needed! |
How long does it take to go brown and how dark does it get? Im thinking if the guitar is kept in a case it may never go brown. What do you think? |
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| Author: | Michael Anthony [ Tue Oct 29, 2013 9:20 am ] |
| Post subject: | Re: Cocobolo color help needed! |
itswednesday14 wrote: How long does it take to go brown and how dark does it get? Im thinking if the guitar is kept in a case it may never go brown. What do you think? I've built 4 cocobolo guitars, 2 turned brown, 2 stayed orange. My original question was aimed at whether anyone knows of an oxidizing agent that could speed the process as I have the patience of a 3 minute egg!! I wonder if delaying the finishing process is the key (as to allow oxygen to get to the wood). Any thoughts on that??? Regarding keeping the guitar in it's case.....if it has a finish, I doubt that in/out of the case would make much difference.....just my thinking on that one! Always open to any 'correction' of my thinking, so don't be shy if anyone thinks I'm loony-tunes!! |
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| Author: | Goodin [ Tue Oct 29, 2013 9:38 am ] |
| Post subject: | Re: Cocobolo color help needed! |
I am no wood expert but I have built one instruments with coco. Like you said, some stay orange, some turn brown. The coco I used was brown when I got it, and stayed brown when I cut it. I think there is a alot of variability in the oxidation/coloration with this species. I think that since your wood was brown, then turned orange when you cut it, it will turn brown again. You could go ahead and build the guitar, get to final sanded, then let it sit out for awhile before finish. And/or use a thin finish, may help. |
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| Author: | Pmaj7 [ Tue Oct 29, 2013 10:14 am ] |
| Post subject: | Re: Cocobolo color help needed! |
If you resawed them, shouldn't they be a book match, both with freshly cut surfaces? Regardless, by the time you join/scrape/sand they will look the same. In the case that you want them to look the same before you build the guitar, you could just resurface the dark piece. (assuming you have enough thickness) And forthly to answer your question, I don't know of anything to put on it to speed up the process. But, from what I've heard, some woods darken due to oxidation and some woods darken do to UV exposure. |
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| Author: | unkabob [ Tue Oct 29, 2013 4:36 pm ] |
| Post subject: | Re: Cocobolo color help needed! |
I have found that mahogany darkens faster when exposed to sunlight. Bob
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