If the paint on old woodwork has cracked or blistered, it should be removed. If the surface has become smooth, it should be cleaned by rubbing with sandpaper or a fine pumice stone. Old paint can also be removed by applying one of the following three paint solvents:
A solution containing 200 grams of caustic soda in one liter of water is prepared and used to wash the surface. The paint dissolves and the surface becomes clean.
A mixture of one part of soft soda and two parts of potash is prepared and then one part of lime is added. This mixture is applied hot to the surface and left for about 24 hours. The surface is then washed with warm water.
A mixture consisting of equal parts of washing soda and quick lime is made into a paste by adding required amount of water. It is applied on the surface and kept for about an hour. The surface is then washed with water.
After removing the old paint from the surface, painting is done in 2 or 3 coats of oil paint.
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