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Black marks on oak

M

MattS

Nordic Pine
Joined
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My brother is after some remedial woodwork from me after leaving a wet keg on his oak table :shock:

It has reacted and left a black ring. I've not used it but am I right in thinking the best approach would be oxalic acid? Would you try sanding first? I imagine the stain will be fairly deep and it's not worth attempting?
 
It depends how much of a task stripping the rest of the top is. If it wouldn't be too difficult to re-finish, then I'd try a scraper, a plane, and/or a belt sander, or hand sanding. You'll have to remove a reasonable amount of material (say a couple of shavings thick).

Oxalic acid will work, but maybe not 100% perfectly. Don't forget to neutralise afterwards. And you're still left with the task of re-finishing.
 
I assumed it was going to be a lacquer finish being from John Lewis, but looking at the current model it mentions oiling so maybe not so bad on the refinishing front! I'll go round with plane, scraper and ROS, don't have a belt sander and see if it touches it.
 
You'll soon see if it's oil.........clogged sanding discs!
 
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