Mix the required amount of colour, consisting of 3 parts Oil Bronze and 2 parts Bronze Medium with a palette knife. If necessary the colour can be diluted with some turpentine substitute (50019). For particularly absorbent surfaces, we recommend treating the surface beforehand with some Bronze Medium diluted with turpentine substitute. Oil bronzes dry smudge- and waterproof. The colour film remains soluble after drying with turpentine oil or turpentine substitute. Pre-tests are recommended prior to the application of varnish.