Drop coating is a vital talent that each auto physique paint sprayer ought to aspire to grasp. Drop coats are administered over the last section of the spraying course of when metallic paints are used. When utilized to an auto physique panel accurately, drop coats provide full coloration protection, excellent metallic content material distribution and a greater paint base that may settle for lacquers with ease. read more about metallic hpl
Making use of Metallic Paint
Drop coating ought to be used with all metallic auto paints. Many paint sprayers apply metallic base coats utilizing the identical strategies with which they apply stable colours, and this can be a frequent error that compromises an in any other case excellent job. Whereas horizontal arm actions are excellent for many stable coloration spray jobs, metallic auto physique paint ought to be dropped onto the panel as quickly as primary protection has been achieved, and it’s equally as necessary to cross coat the ultimate utility in horizontal and vertical instructions.
Guaranteeing Uniform Paint Protection
Earlier than drop coats may be utilized, the ready automotive panel have to be adequately coated with metallic auto physique paint to assist keep away from primer transparency. As soon as the colour is activated, a full moist coat of paint ought to be sprayed to the floor of the panel. It’s important that every horizontal spraying motion blends into the earlier one to ensure uniform protection and distribution (overlaps of 30% to 40% are excellent). As quickly as a single we coat has been utilized, the auto physique paint have to be left to dry for round 10 minutes. By no means spray a second coat till the primary one has achieved a matte look.
Making use of a Second Coat of Metallic Paint
Personally, I prefer to spray the subsequent coat of paint in a special route to the primary, particularly when the panel has been taken off the automotive. Generally, this is not attainable on vertical panels, resembling fenders and doorways, if they’re nonetheless fitted to the automobile so do not be too involved in case you are happier utilizing a typical horizontal spraying sample. The second utility have to be sprayed in an analogous method to the primary coat, however attempt to obtain 80% wetness compared to the sooner utility. As soon as extra, the auto physique paint have to be left to dry for round 10 minutes till matte.
Making use of the Drop Coat
If the metallic paint remains to be clear, a further coat could also be required however this may not be vital most often. To spray the precise drop coat, place the spray gun 18 to 24 inches away from the floor of the panel and cut back gun stress by 20% to 30%. Spray the auto physique paint horizontally, transferring the arm slowly throughout the panel so the metallic coloration drops (or falls) onto the floor. Preserve uniform protection till the spraying course of is full. Recoat the panel from an analogous distance right away, however swap the horizontal actions for a vertical route so the next coat crosses the primary. In addition to guaranteeing even paint protection, crossing the drop coat presents uniform steel distribution and a superior floor that can settle for lacquer accurately.