How to Remove or Lighten Stains on Wood using Oxalic Acid

In this video Simon demonstrates how Gilboys Antique Restorers use oxalic acid to remove stains and marks, often without the need to sand the surface.

You can now buy Oxalic Acid on our website: http://bit.ly/3QZIon9

The best way to remove stains from wood furniture is by using oxalic acid. Professional furniture restorers have been using this very safe and easy to apply treatment for decades. Oxalic acid is very effective at removing food and drink stains, including spilled red wine and water marks.

In this easy to follow video guide, I describe how anyone can use oxalic acid to remove unwanted marks from their wooden furniture.

I've been restoring furniture since I completed my apprenticeship in 1991. Establishing Gilboys restoration early in 1994 with the help of HRH The Princes Trust.

Video Chapter Index
00:05 Introduction
00:23 Preparing the bare solid oak for treatment
02:00 Mixing the oxalic and washing soda
04:10 Applying the oxalic with a sponge scourer
08:02 The results of using the oxalic on oak
09:00 Treating mahogany with oxalic
09:50 Stripping the mahogany
11:30 Preparation before applying the oxalic to mahogany
12:50 Applying the oxalic acid to the wood
15:30 washing soda reaction with oxalic
17:13 The difference between modern veneer and an antique veneer
18:12 Close up of washing soda reaction
20:12 Results after 24 hrs
20:44 Using a small artists brush for detailed, spot removal of stains and marks
22:09 How to apply french polish (shellac) to show off the wood
23:57 Applying the polisher's fad to the wood surface
24:32 A french polishers mop
24:51 Showing off the mahogany finish
25:47 Applying a fad to the treated oak
26:10 Close up of the sealed oak
26:25 Conclusion