CNC Plasma Cut Sign can be supplied in one of three finishes. (RAW) Raw and untreated, this will rust over time, giving a great look - This is our standard finish. The raw finish may have odd surface marks but nothing major. This is very normal for sheet material and can be sanded/burnished out, or wire brushed with a grinder. We other two types of finishes are (RAW+LAC) raw and clear lacquer coated, which will help protect the 'steel' look for several years to come and (PAT) a patinated finish which makes it look rusty and aged. The 'rusty' patinated (PAT) finish is a layer of oxidised material artificially generated and is powdery and can be loose for a few days or weeks (the main image above is patinated). If you want to keep your sign simple, then choose (RAW). When you get your sign or artwork thoroughly degrease it before putting it outside. Then just let mother nature do her job. We strongly recommend that you have your metal signs and artwork in (RAW) raw/untreated. Like this way, you can make the sign your own. By either leaving it as is or finishing painting it to compliment your house or premises.