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Removing discolouration from spruce... http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10101&t=52499 |
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Author: | meddlingfool [ Thu Oct 03, 2019 2:34 pm ] |
Post subject: | Removing discolouration from spruce... |
Not sure why the ends bled dark, but, they did. Mostly out of pattern but it would be nice to get the small bit out. Sent from my iPhone using Tapatalk |
Author: | meddlingfool [ Thu Oct 03, 2019 2:35 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Err...that’s a question btw... Sent from my iPhone using Tapatalk |
Author: | Clay S. [ Thu Oct 03, 2019 2:46 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Do you know what the stain is from? The first thing I would do is cut a "ramp" in some of the stained scrap to determine how deep the staining goes. If it's on the surface and you know what caused it there might be a treatment to remove it. If it goes all the way through then staining to match or doing a burst finish with an opaque edge might be the way to go. I have some tops I bought 40 years ago that were old when I bought them and have a discolored edge from being "suntanned" on one side. It goes all the way through. The tops themselves have darkened a lot but the dark streak remains, which is probably why I have only used one or two even though they are well dried. |
Author: | DannyV [ Thu Oct 03, 2019 3:20 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Sinker Spruce upsell! |
Author: | meddlingfool [ Thu Oct 03, 2019 3:26 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Goes all the way through... Guess I'll try OA... |
Author: | phavriluk [ Thu Oct 03, 2019 9:48 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Each piece of wood is unique. I see nothing wrong with celebrating it. But you're in a different position than me. I build for myself (see above). |
Author: | meddlingfool [ Fri Oct 04, 2019 1:16 am ] |
Post subject: | Re: Removing discolouration from spruce... |
It goes all the way through and the OA didn't help. We'll have to live with it... |
Author: | A.Hix [ Fri Oct 04, 2019 9:24 am ] |
Post subject: | Re: Removing discolouration from spruce... |
Hi Ed, some spruce soundboard processors use anchor seal or something similar on their billets (ends) to prevent end checking before resawing. That could be the cause of the stain. It seeps in end grain pretty deep, especially if exposed to any heat. I used that stuff when I first started processing adirondack tops, and learned the hard way not to use it again. |
Author: | meddlingfool [ Fri Oct 04, 2019 11:36 am ] |
Post subject: | Re: Removing discolouration from spruce... |
Could be something like that... |
Author: | Fasterthanlight [ Sat Oct 05, 2019 11:25 am ] |
Post subject: | Re: Removing discolouration from spruce... |
is this sitka? I've seen this on sitka alot... i think it might be species-specific... |
Author: | Tim Mullin [ Sat Oct 05, 2019 5:50 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
My wife and I have been discussing this. She’s now an artist, but has her doctorate in plant physiology and long experience in forest pathology. No doubt the staining is a reaction to fungal attack, creating tannins that give the brown colour. You can’t get rid of the metabolites with anything we discussed and the wood itself is forever changed. Time, me thinks, for a burst. Sent from my iPad using Tapatalk |
Author: | Joe Beaver [ Tue Oct 08, 2019 5:43 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Good Reply Tim. Thanks to you and especially your very smart wife. |
Author: | Barry Daniels [ Wed Oct 09, 2019 11:15 am ] |
Post subject: | Re: Removing discolouration from spruce... |
Fungal attack results in spalting and is usually associated with damp conditions. I think this may be different. I have some 60 to 70 year old spruce in my stash which has a similar discoloration. Personally, I think the effect is something to admire and point out as a feature. Natural torrification. |
Author: | AndyB [ Tue Oct 15, 2019 3:10 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Perfect candidate for a top burst. It's all the rage. |
Author: | John Arnold [ Thu Oct 17, 2019 1:18 am ] |
Post subject: | Re: Removing discolouration from spruce... |
Looks like normal oxidation to me. If true, the whole top will eventually be this color. This is a common issue with older woods. |
Author: | AndyB [ Mon Oct 21, 2019 4:35 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
John, can you expand on what you mean by older? Age of tree? How long ago it was cut? Or something else? Thanks. |
Author: | John Arnold [ Fri Oct 25, 2019 3:14 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Older, as in cut a long time ago. Oxidation rate is a function of exposure. End grain is more absorbent, and will react quicker. In addition, if the wood is stacked, the exposed edges with oxidize quicker. Some end grain sealers have a tendency to wick in, particularly if the wood gets hot in storage. |
Author: | meddlingfool [ Fri Oct 25, 2019 4:07 pm ] |
Post subject: | Re: Removing discolouration from spruce... |
Interesting. It was joined and put in a stack over a decade ago I’d say... |
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