Thread: HELP .. Blue spots on Tas Oak after damp sponge to raise grain

Happens all the time with Tas Oak.......oxalic acid solution is your friend.

Buy oxalic acid crystals (chemist), make up a weak solution, swab on, wait a while, swab off. Stains gone.

Thank You .... Thank you .... Thank You .... Thank you ..... Thank You .... Thank you .... Thank You .... Thank you

I'll be at the chemist's door in the morning

Rob

Google "oxalic acid timber cleaner" first ......as well as making up your own solution, there are likely several ready to go products available that do the same thing. I think Feast Watson have one, also even Bunnings keep an oxalic acid product

Products | Diggers Timber Cleaner (Concentrated Oxalic Acid) | Recochem - Australia

It's pretty cheap however you do it.

I've used this numerous times after a mate who was a restorer put me onto it.
However I seem to remember he told me the solution you make up is poisonous.
Id even be careful breathing the dust.
H.

As an alternative to the above, cut a lemon in half and rub the cut piece over the stain. I have used this several times with stains and it works.

Good luck

Router

...and it leaves your furniture smelling lemony fresh !! I'm sure it would work well on timber, but you reminded me that a lemon is also great for removing the black stains on your hands from working with Tas Oak.

If only I'd known... I had something very similar happen with Blackbutt, dark discoloration around the joints that took forever to sand and scrape away - and even then there was still some stuff deep in the wood. I need to change the legs on that table anyway, might strip back the shellac and give the lemon or oxalic acid a go. And here I was thinking I was just a dirty bugger and smeared dirt all over my wood.