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Marks on plywood

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plywood
2.8K views 3 replies 3 participants last post by  bosley.john  
#1 ·
I've been working with this bit of plywood, and I was hoping these bluish stains would sand out, but they have not. I googled and came with information about some kind of fungus (blue stain damaged wood).

This kind of looks like a drip-shaped mark though, so I'm not sure if it is that. Is anything I need to worry about? should I just live with it?

It's the top of a coffee table. I'm planning on oiling the surface with Osmo oil, and wondering if that will make them more or less pronounced.

Any advice appreciated.

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