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Forum topic by jameskeith posted 02-15-2016 02:55 PM 388 views 0 times favorited 1 reply Add to Favorites Watch
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1 post in 1032 days

02-15-2016 02:55 PM

Could any-one tell me?((1/4inch thick)) I can put a flashlight behind it and knots and some veins glows rose coler! any-one tell me what causes this to happen and how rare is this

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1422 posts in 1929 days

#1 posted 02-15-2016 03:37 PM

The liquid in the wood or knots allows light to travel through the wood. When the liquid dries, light will not show through.

I know this because I’ve turned a lot of soaking wet Palo Verde, and as long as it’s wet, light will go through 3/8” thick wood and thinner. When dry, it’s just another piece of wood no matter what the thickness. My thinnest so far is 3/16” thick walls.

Years ago I made some solid shutters out of 1×12 pine with a lot of knots. They went on a west facing window. When the sun highlighted the shutters at about 3 pm until darkness, about half the knots glowed. I looked and could see a bunch of resin in the knots, but it never leaked out. The knots that didn’t glow were dry knots…....... Jerry (in Tucson)

-- Jerry (in Tucson)

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