NC4TN
ArboristSite Operative
Woodbooga said:
"Does the tannic acid pervade the entire tree? I know it's heavily concentrated in the bark which was prized by tanners who'd crush it up in barkmills for their tanpits. Hemlock too. Which begs the question - why doesn't hemlock have oakwhiff if it's the tannic acid that imparts the aroma?
If someone knows, I'll be in your debt. I've wondered this for years".
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Don't know 'zactly woodbooga, but I'm guessing the fir-type resins are overpowering the sap containing tannic acid. And yes, it is concentrated in the sapwood. I do know that when you saw red oaks in the spring when the sap is rising, you don't want to get any sawdust it in your eyes! Talk about burning!
I learned long ago to not get to close to the circle sawmill blade when we sawed red oak. Every now and then we'd hit what we called a "water pocket" when sawing red oak and it'uld sling everywhere, and sometimes right into your face!
"Does the tannic acid pervade the entire tree? I know it's heavily concentrated in the bark which was prized by tanners who'd crush it up in barkmills for their tanpits. Hemlock too. Which begs the question - why doesn't hemlock have oakwhiff if it's the tannic acid that imparts the aroma?
If someone knows, I'll be in your debt. I've wondered this for years".
**************************************************
Don't know 'zactly woodbooga, but I'm guessing the fir-type resins are overpowering the sap containing tannic acid. And yes, it is concentrated in the sapwood. I do know that when you saw red oaks in the spring when the sap is rising, you don't want to get any sawdust it in your eyes! Talk about burning!
I learned long ago to not get to close to the circle sawmill blade when we sawed red oak. Every now and then we'd hit what we called a "water pocket" when sawing red oak and it'uld sling everywhere, and sometimes right into your face!