Hammerite paint's innovation comes in its ability to cover up rust and to create a metallic finish. It can be used on metal as well as wood. Like any paint job, there may come a time when the paint needs to be removed. Hammerite paint contains a special hardener, making it difficult to remove by sanding. Remove Hammerite using a paint and varnish stripper. Paint and varnish stripper penetrates and softens the paint, allowing it to easily be scraped away.
Apply a thick coat of paint stripper on top of the Hammerite, using a paintbrush. Don't try to work the stripper into the Hammerite with the brush. Simply lay it on and allow it to sit on top of the paint. Leave the stripper to sit for the time indicated in the stripper manufacturer's instructions. The Hammerite will gradually soften.
Scrape the softened Hammerite away, using a putty knife. Use a plastic putty knife if you are worried about scratching the underlying surface. Wipe the constituted paint and paint stripper from the putty knife onto newspaper.
Remove any residual stripper from metal by wiping the metal down with lacquer thinner. Remove any residual stripper from wood by sanding it with sandpaper or steel wool. Sand in the direction of the wood grain.
Leave toxic stripper on the newspaper to dry and place it in a metal container with a lid. Contact your local waste disposal facility for removal.
Work in a well-ventilated area and wear protective clothing and gloves, especially if the kind of stripper you are using contains methylene chloride, which is toxic.