Removing blue stain

      Ideas for removing and preventing blue stains in newly processed pine. August 1, 2000

I need some help in removing blue stain from white pine cants, 8-by-8 and 12-by-12, which are to be used in timber-frame construction. The logs were felled and sawed into cants in the fall, and were stored outside. I know what causes blue stain, and against my advice the cants were not stored properly. Right now, I just need to know how to get rid of it (if that's possible).

Clorox bleach will lighten the color a little bit. It also will affect the color of the wood.

TSP (trisodium phosphate) and elbow grease will also help remove some of the color.

If you use a wire brush, you can scrape some of the color off.

Good luck -- there is no perfect cure.
Gene Wengert, forum moderator

The best way is to avoid the wood from bluing in the first place. Once the wood is blue there is no total cure. For future reference, make sure your cants are stacked so plenty of air can get to them.

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