[kiwi_steve]

Hi Steve,

I have used Boric acid with great success.
Wet Boraxo does a great job. May take a few applications.

Tim

Thanks Tim - Borax and Boric Acid are apparently very different beasts - I'm still reading but it looks like Borax can be used to neutralise Oxalic Acid after its been used to de-stain wood... 

Do a search for wood bleach. I can't find the threads right now, but I've some pretty bad (black) stains removed with wood bleach.

Apparently thats a catch-all term for a lot of different stain removers including 2-part mixes, bleaches and acids which all do different jobs depending on the stain... I'm more confused now than ever