How To Spray Varnish On To Sheet Metal

The paint should adhere to the prepainted metal surface.

How to spray varnish on to sheet metal.

Apply latex paint to the surface. On older galvanized metal surfaces where the zinc coating has begun breaking down known as white rust use a wire brush or fine sandpaper to remove the chalky film before cleaning it. Keep your coats thin for a smooth even finish. Use a brush roller or spray can depending on your preference or the size and shape of the metal object.

Rinse the metal with a weak solution of water and ammonia and allow it to dry. The acidity of the vinegar will react with the metal treating the surface to promote paint adhesion. Shake the can vigorously for 45 to 60 seconds and spray onto a cardboard box or the bottom. Wash the metal thoroughly with hot soapy water.

The acid in the vinegar will act to etch the metal and help the paint adhere. Once the metal has dried dampen a cloth with white vinegar and wipe the surface down. After removing loose paint first apply an orbital sander using 60 grit sandpaper working up to 100 grit sandpaper for a smooth finish. Remove any handles or other attachments from the metal.

Spray in a quick smooth and even pattern until the surface is covered. Apply a wire brush and scraper combo to the metal first to remove all loose paint and rust or to scuff up the surface of aluminum or galvanized metal. The acidity of the vinegar will further abrade the metal. Once again read your product s instructions shake the can for as long as directed and use even continuous strokes.

All you have to do is simply apply the vinegar to a clean rag and then wipe down the galvanized surface. Once you ve roughened the surface wipe the sheet metal with white vinegar and a soft clean cloth. Apply 2 to 3 thin coats of rust inhibiting metal spray paint. Let the vinegar air dry and then choose.

Apply spray paint to the sheet metal. Acrylic latex provides the best coverage on prepainted surfaces. Be sure to wait at least 2 hours before applying an additional coat. White vinegar is both effective and non toxic so it is much safer to use than your average industrial solvent.

Get your mask gloves and goggles on and test your spray paint to ensure it provides a thin fine mist.