Stains

[Byron Trantham]

I have a couple small dark grey stains probably put there by my clamps. I have been told that oxletic acid will remove them. I can't find it locally. Is this a good stain remover? Would a diluted solution of beech work? The material is soft maple.

[Tim Sproul]

I have a couple small dark grey stains probably put there by my clamps. I have been told that oxletic acid will remove them. I can't find it locally. Is this a good stain remover? Would a diluted solution of beech work? The material is soft maple.

Oxalic acid will remove stains caused by iron. If you look for deck cleaners, they are oxalic acid solutions.

Wipe it on and come back the next day. Repeat if necessary.

[Byron Trantham]

Oxalic acid will remove stains caused by iron. If you look for deck cleaners, they are oxalic acid solutions.

Wipe it on and come back the next day. Repeat if necessary.

Well heck! Thanks for the information. I'll go out tomorrow morning and try to get the smallest quantity that I can.

[Steve Schoene]

Paint stores, real ones probably not the fake ones at the borg, often have oxalic acid. It used to be in little boxes, alone with things like whiting, and pumice. It's probably now in little tubs along side the same things. It might be labeled wood bleach, so read the labels of packages labeled that way.

[Jeff Jewitt]

Rockler carries it.

[Jack Briggs]

There are wood bleaches which have 2 parts - one with peroxide; the other with sodium hydroxide. These really work well on woods with high tannins such as oak or mahogany to lighten the tone of the wood.

Then there is oxalic acid. Liberon market this, which is available at Woodcraft and other sources. This is what you want to use, I think.

http://www.woodcraft.com/family.aspx?familyid=5535

It shouldn't affect the color of maple.

[Byron Trantham]

Rockler carries it.

I ordered it. thanks.