ASE REFINISHING PRASTICE EXAM 2025

A hazy, milky, paint surface is also known as - Correct Ans-Blushing is when the paint gets milky look to it from humidity trapped in the paint film. What does the digital mil thickness gauge show? - Correct Ans-It measures the thickness of a paint film. The letters TPO are on a plastic part. The letters stand for - Correct Ans-TPO stands for thermoplastic olefin. A painted surface has small craters caused by silicone containment. These are also called - Correct Ans-Fish-eyes are caused by silicone containment on the surface. Pattern control knob - Correct Ans-The fluid knob is located below the pattern control knob. The gradual change in height from bare metal to topcoat is called - Correct Ans-The gradual change in height from metal to topcoat is called a featheredge. Solvent pop may look like - Correct Ans-Solvent popping may look like pinholes because as the solvent works its way to the surface, it can pop and leave holes in the paint surface. In a multi-stage paint, the intermediate layer is the - Correct Ans-The intermediate coat is typically a pearl coat. Some multi-stage finishes have a tinted clear as the intermediate coat, but peal is more common. Exterior moldings are attached using - Correct Ans-Silicone adhesive is not used to attach exterior moldings. Silicone-based adhesives are not compatible with painted surfaces. What is the name for paint cracking - Correct Ans-Micro-checking, crows feet, and line checking are all examples of paint that is cracked. Chalkin is when a paint surface turns white as it gets older. What is an example of airborne industrial contamination - Correct Ans-Rail dust, acid rain, and soot are all examples of industrial contamination. They are all byproducts of industry. Tree sap is considered organic contamination. What type of paint is the easiest to match - Correct Ans-Single-stage paint can be solid or metallic. It can be various types of paints such as lacquer, enamels, and urethane. A base coat needs to be clear coated so it is not single stage paint. Bleed-through causes - Correct Ans-Bleed-through causes discoloration on the undercoats and the topcoats. Bleed-through does not cause pinholes. Molting is a spray technique problem. Bleed-through cannot cause rust. It is caused by bare metal, moisture, and oxygen. What is a hazardous waste - Correct Ans-The cleaning process removes dirt, oil, road tar, grease, and other oil and water-based contaminants. It does not remove paint from the surface. What is least likely to be picked up by a tack rag - Correct Ans-A tack rag will pick up loose particles on the surface to be painted. It will pick up hair, dirt, fuzz, lint, and so on. A tack rag is not absorbent so it will not pick up water from the surface. Two-part putty consists of - Correct Ans-A two-part putty consists of putty and a hardener. There are one-part putties. A two-part putty will be a stronger material so it is more commonly used today. Single-part putty creates a weak link in the repair. OSHA stands for - Correct Ans-Occupational Safety and Health Administration. This organization makes sure we have a safe work environment. What paint problems is caused by static electricity - Correct Ans-Dust contamination is caused by static electricity. Static electricity building up in body panels will attract small airborne particles of dust, causing contamination of freshly painted surfaces. A slow-drying solvent is used during cool conditions, about 60F. What could result from this - Correct Ans-When spraying paint during cool conditions, a fast reducer should be used to decrease drying times. If a slow drying reducer is used, the paint will stay wet too long and sags will develop. What is used to describe hue - Correct Ans-Hue is the tint of a color. Is it red, blue, or green? The four primary colors on a typical color wheel are red, green, yellow and blue. Hue is described in relation to one of these colors. A color can be redder or yellower. It is not described as oranger. What are vehicle substrates - Correct Ans-A substrate is a surface that is going to be painted. Steel is the most common substrate on a vehicle today. Both rigid and flexible plastic are becoming more popular. Tempered glass is not considered a substrate because it is not a painted surface. A spray panel used to check for color match on a tri-coat finish is called a - Correct Ans-A let-down panel is designed to check how many coats of pearl are required to match an existing finish. Each coat of pearl typically makes the color darker. If you get too many or too few coats of pearl on the panel it will not match. Catalyze paint is to be sprayed. Painter A says that a supplied air respirator should be worn. Painter B says a cartridge respirator should be worn. Who is right? - Correct Ans-Painter A is correct. All paint manufacturers recommend using a supplied air respirator when spraying catalyzed paint. A cartridge respirator is not enough protection. What is arcing problem? - Correct Ans-Heeling is when the bottom of a spray pattern is closer to the surface than the top of the spray pattern. Blending is stepping out one color over another so the difference is harder to see. Banding is painting the edges of a panel before painting the flatter surfaces. A paint user face has several circular, white outlines visible in the paint. Painter A says that these are rust spots. Painter B says that these are water spots. Who is right? - Correct Ans-Painter B is correct. Water spots will look like white circular outlines on the surface. When rust starts to show up in a paint surface, there will be bubbles in the paint. What factor determines what size of the fluid tip orifice to use? - Correct Ans-The size of the fluid tip to use is determined by what you are spraying, and its viscosity. If you do not have enough air volume, the gun will not spray properly with any size tip. Air and paint pressure are adjusted after the tip size is chosen for the product you are spraying. A clear coat has minor discoloration from tree sap. Painter A says that you should sand and buff. Painter B says you should sand and repaint. Who is right? - Correct Ans-Painter A is correct. When repairing surface defects in a paint surface, you should always try the least aggressive method first. In this case, sanding and buffing is less aggressive than painting. Which of the following is a problem associated with clearcoat application? - Correct Ans-When spraying clear you can cause sags, runs, or orange peel. When spraying metallic colors, for example, the color may change depending on the spray technique. A mismatch can come from excess thickness of a clearcoat on light colors such as white, but that is not a problem with the application process. Painter A says that to determine if a nonwhite paint surface has clearcoat, the surface should be sanded to see if it sands white. Painter B says the sanding test will not work if the vehicle is white. Who is right? - Correct Ans-Both painters are correct. Sanding on a non-white color will determine clearcoat. Sanding white paint cannot be used to determine clearcoat. A painted surface has light overspray. Painter A says that you should remove it with lacquer thinner. Painter B says that you should remove it by buffing. Who is right? - Correct Ans-Painter B is correct. Light overspray can usually be removed by buffing. Do not use lacquer thinner because it may damage the paint surface or other surfaces. If the overspray is bad, it may require sanding and buffing. A streaking of a metallic paint surface is called - Correct Ans-Mottling is when the metallic does not lay evenly and has streaks of lighter and darker color. Sometimes it is called tiger or zebra striping. Blushing is when the paint looks milky; this is caused by humidity problems. Lifting is a reaction between the topcoat and the underlying finish. Blistering looks like small bumps in the paint surface. Painter A says that seam sealer must always be primed before painting. Painter B says that bare metal should be primed before splaying seam sealer. Who is right? - Correct Ans-Painter B is correct. Seam sealers are not designed to go directly over bare metal. A two-component primer should be applied first, then the seam sealer. Many seam sealers require priming before painting, but there are some you can paint directly over. Painter A says that graphics decals must be applied to bare metal. Painter B says that a graphics decal is applied only after all painting operations are completed. Who is right? - Correct Ans-Painter B is correct. Graphics decals must always be applied to a painted surface. Graphics decals do not adhere very well to bare metal, and you will sacrifice corrosion protection by putting them over bare metal. A vehicle has peeling paint. Painter A says that peeling is caused by a loss of adhesion between the paint and the undercoat. Painter B says that to correct peeling, all peeling paint must be removed. Who is right? - Correct Ans-Both painters are correct. If the paint on the vehicle is peeling, it is caused by improper surface prep, which causes a loss of adhesion. If this problem exists, all the peeling paint must be removed, the surface sanded, and then refinish. The front door on a vehicle has been painted. There is a slight mismatch. What should the painter do? - Correct Ans-If there is a slight mismatch, you should blend into the adjacent panels. If the front door was painted, blend into the fender and the rear door. With a slight mismatch there should be no reason to go into the quarter panel. Painter A says that overloaded exhaust filters change the cabin pressure in the booth. Painter B says that overloaded spray booth filters do not pass enough air. Who is right? - Correct Ans-Both painters are correct. If the exhaust filters are overloaded, they are getting plunged with paint overspray. This will prevent sufficient airflow through the filters and increase the cabin pressure in the spray booth. Painter A says the dull dry look of weathered paint is called oxidation. Painter B says the dull dry look of - Correct Ans-Both painters are correct. When the paint weathers and starts to break down it is called oxidation. Often with this oxidation the paint looks white and chalky. This is called chalking. Oxidation and chalking are both part of the oxidation process. A vehicle needs to be masked. Painter A recommends using liquid mask. Painter B recommends using plastic film. Who is right? - Correct Ans-Both painters are right. When masking a vehicle there are a number of options. You can cover the vehicle with liquid masks, plastic sheeting, or masking paper. In the area adjacent to where you are painting, you should use masking paper for about 18 inches around the paint area. A 100 percent reduction is also - Correct Ans-A 100 percent reduction is one part paint to one part reducer. One part paint to two parts reducer would be 200 percent reduction. Two parts paint to one part reducer would be 50 percent reduction. One part pain to one-half parts of reducer would be 50 percent reduction. A paint surface has runs in it. Painter A says that improper paint mixing may be the cause. Painter B says that improper spray technique may be the cause. Who is right? - Correct Ans-Both painters are correct. If the paint is mixed to thin, it will run very easily. If the painter does not move fast enough, the gun is too close to the surface, or the reducer is too slow for the shop temperature, runs can result. What is the easiest type of blend to make? - Correct Ans-A basecoat/clearcoat panel is the easiest blend to make. You can blend the color and clear the whole panel. A basecoat/clearcoat spot would be blending the clear also. This is not as easy and not recommended by some vehicle makers. A tri-coat or single stage spot is not as easy because, again, you have to blend the clearcoa