Here's how it works
Clean and dry the mailbox, make sure there's no grease or rust. Shake the universal primer spray from Edding vigorously for at least three minutes and then remove the spray guard, which is located under the spray head. Test briefly, e.g. on the masking paper. Then paint the mailbox in a cross-coat and observe the drying time indicated on the box. Now prepare the desired colour tone in the same way as for the primer spray. Apply here also in crosswise direction and the distance to the letterbox should be 25 cm. Finally, use the Clear varnish-spray from Edding. It makes the mailbox shine and protects against Rust and yellowing.