Collision Blast - Preparation

1. Proper prepping a car is one of the most important steps to performing a professional hi-quality paint job.

True

False

The preparation must be performed correctly to provide a hi-quality job.

Explanation

The preparation must be performed correctly to provide a hi-quality job.

2. To produce a professional quality paint job, a painter must purchase the most expensive spray gun available on the market.

True

False

High quality spray guns help make the job easier, but when it come to paint, preparation is the most important.

Explanation

High quality spray guns help make the job easier, but when it come to paint, preparation is the most important.

3. Feather edging is the process of transitioning the repair area, body filler, metal, and coatings to a smooth surface. This is the process of layering each coating so the build-up of coatings are less noticeable.

True

False

Yes, feather edging is layer each layer of coating to provide a less noticeable surface. Primer surfacer is used to apply and block sand to produce a level surface with no rings of layered paint.

Explanation

Yes, feather edging is layer each layer of coating to provide a less noticeable surface. Primer surfacer is used to apply and block sand to produce a level surface with no rings of layered paint.

4. You should mask to the edge of jambs when spraying primer.

True

False

Mask to the edge of jambs when priming to prevent primer from getting into the jamb areas. When painting mask back from the edge to allow paint to wrap around the corner.

Explanation

Mask to the edge of jambs when priming to prevent primer from getting into the jamb areas. When painting mask back from the edge to allow paint to wrap around the corner.

5. Properly cleaning the paint surface before beginning repairs may eliminate fish eyes when spraying and use less sandpaper when sanding.

True

False

Silicone from waxes cause fisheyes and clog sandpaper faster.

Explanation

Silicone from waxes cause fisheyes and clog sandpaper faster.

6. It's late Friday night, you're painting a car and now it is ready to clear coat. However, you forgot to look earlier in the day and now you discover that you do not have the catalyst for the clear coat. All of the stores are closed and you are going out of town for the weekend. After reading the technical data sheet, you see that the paint should flash for at least 30 minutes before applying clear coat, but no longer than 24 hours. This is a 24 hour window, which is the time that there is chemical adhesion. However, the window will pass by Monday morning.....what are you going do?

Just go ahead and spray the clear Monday morning and hope it doesn't peel.

Find any type of catalyst in the shop and get it sprayed tonight. All catalyst are the same thing.

Give the car back to the customer Monday morning without clear coat. He will never know!

If you loose the chemical adhesion, then you must provide mechanical adhesion by scuffing. Next, spray another coat of base coat to assure even coverage and then apply clear coat.

Explanation

If you loose the chemical adhesion, then you must provide mechanical adhesion by scuffing. Next, spray another coat of base coat to assure even coverage and then apply clear coat.

7. Primer surfacer should be sprayed over epoxy primer for it's filling properties. This type of primer is thick, fill scratches, and sands well.

True

False

Epoxy primer does not fill or sand well. Epoxy is used for corrosion protection. Primer surfacer is used to fill scratches and sands well.

Explanation

Epoxy primer does not fill or sand well. Epoxy is used for corrosion protection. Primer surfacer is used to fill scratches and sands well.

8. It may be necessary to lay plastic over the entire car when priming a repair area.

True

False

It only takes a minute to cover the car with plastic. If you think there is a chance of getting overspray on the undamaged adjacent panels and parts, go ahead and drop plastic over the car.

Explanation

It only takes a minute to cover the car with plastic. If you think there is a chance of getting overspray on the undamaged adjacent panels and parts, go ahead and drop plastic over the car.

9. Masking for primer is less important than masking for paint. It's easier to clean moldings and glass that may have had a little primer overspray on them than to waste time masking.

True

False

2K primers are very difficult to remove from moldings and trim. It is equally important to do a good mask job when priming or painting.

Explanation

2K primers are very difficult to remove from moldings and trim. It is equally important to do a good mask job when priming or painting.

10. When sanding a new OEM panel, you should final sand the panel, but try to leave most of the e-coat on the panel.

True

False

Yes, most of the guide coat should be lefton the panel. E-coat provides superior corrosion protection.

Explanation

Yes, most of the guide coat should be lefton the panel. E-coat provides superior corrosion protection.

11. If it's a rush job and the customer is going to be there to pick the car up today at 5PM, it's alright to skip or rush through the prep work in order to have the car ready for the customer as promised. The customer will always overlook imperfections, if he or she get their car on time.

True

False

Most customer will overlook a deadline, if you let them know in advance. However, if the car is not to their satisfactory, they will tell everyone they know about it for years to come.

Explanation

Most customer will overlook a deadline, if you let them know in advance. However, if the car is not to their satisfactory, they will tell everyone they know about it for years to come.

12. A painter needs to spend more time perfecting his/her prep skills than time spent perfecting their spraying skills.

True

False

Spraying skills are important, but prep is the most important step.

Explanation

Spraying skills are important, but prep is the most important step.

13. Flash time is:

How fast the painter sprays.

How long it take the paint to cure.

The time needed to wait between coats.

There is no search term as flash time in auto body.

14. What is the purpose of sanding a painted surface when preparing it for paint?

To provide a smooth surface for the paint.

To rough up the surface for paint.

To clean the surface for paint.

It is not necessary to sand if the paint is in good condition.

The purpose of sanding is to rough the surface to provide mechanical adhesion.

Explanation

The purpose of sanding is to rough the surface to provide mechanical adhesion.

15. Using a block to block sand primer surfacer is not necessary, just hand sand the primer. That will work just as good.

True

False

The purpose of block sanding primer surfacer is to level and identify lows. Sanding with the palm of your hand will not achieve this.

Explanation

The purpose of block sanding primer surfacer is to level and identify lows. Sanding with the palm of your hand will not achieve this.

16. Technician A says that featheredging should be done before priming. Technician B says that featheredging should be done after priming. Who is correct?

Technician A only

Technician B only

Both Technician A and Technician B

Neither Technician A or B

Feather edging should be performed before priming. Blocking the primer will help level and prevent the feather edge area from showing up after painting.

Explanation

Feather edging should be performed before priming. Blocking the primer will help level and prevent the feather edge area from showing up after painting.

17. "Foam Tape" the foam tape is used to mask:

Glass

Door handles

Jamb openings

Custom stripes

Foam tape is used for making a soft edge when masking jamb openings.

Explanation

Foam tape is used for making a soft edge when masking jamb openings.

18. It may be possible to prime a small repair without masking.

True

False

If the dent is in the center of a panel, it is possible to adjust the spray gun to spray a small patter with low overspray.

Explanation

If the dent is in the center of a panel, it is possible to adjust the spray gun to spray a small patter with low overspray.

19. What color of 3m Scotch-brite scuff pad should be used for scuffing edges and hard to reach areas extra good, when the entire panel is being painted?

Red

Gray

Yellow

Red is used where base coat will be applied. Gray is used if only clear coat is going to be applied to the surface.

Explanation

Red is used where base coat will be applied. Gray is used if only clear coat is going to be applied to the surface.

20. What type of paint problem may appear after the surface has been painted and clear coated, if the car was not properly featheredged?

Rings.

Adhesion failure.

Mis-match color.

You do not need to featheredge if you prime and block sand.

If not properly featheredged, rings from the layers of paint may show up after painted.

Explanation

If not properly featheredged, rings from the layers of paint may show up after painted.

21. Transitional tape and back masking are two methods that can be used for masking jamb openings.

True

False

Transitional tape, foam, and back masking can be used on jamb openings.

Explanation

Transitional tape, foam, and back masking can be used on jamb openings.

22. Using a 6" Dual Action (DA) sander, _____grit sandpaper is the best selection below to use for feather the edges.

80 grit

500 grit

800 grit

220 grit

220 grit can be used for feather edging. 500 grit is used for final sanding for base coat. 800 grit is used for final sanding for clear coat.

Explanation

220 grit can be used for feather edging. 500 grit is used for final sanding for base coat. 800 grit is used for final sanding for clear coat.

23. It is recommended to feather or layer each coating at least _____.

1 inch.

3/4 inch.

1/4 inch.

1 1/2 inches.

Each layer of paint should be feathered at least 1/4 of an inch to eliminate rings from appearing after the part has been painted.

Explanation

Each layer of paint should be feathered at least 1/4 of an inch to eliminate rings from appearing after the part has been painted.

24. A repair area is ready for epoxy primer. For the best result, the painter should:

Primer the entire panel with epoxy primer.

Epoxy is only needed for bare metal. There is no benefit to priming undamaged areas where no bare metal is present.

Explanation

Epoxy is only needed for bare metal. There is no benefit to priming undamaged areas where no bare metal is present.

25. It is not necessary to sand the epoxy primer before spraying the primer surfacer if sprayed within the recommended window time.

True

False

According to the technical data sheet for the epoxy primer, the epoxy has a 72 hour window. This means that there is a chemical adhesion window. After 72 hours, the primer will loose it's chemical adhesion and must be sanded to provide mechanical adhesion.

Explanation

According to the technical data sheet for the epoxy primer, the epoxy has a 72 hour window. This means that there is a chemical adhesion window. After 72 hours, the primer will loose it's chemical adhesion and must be sanded to provide mechanical adhesion.

26. Guide coat is used to identify highs and lows throughout the body filler and primer stages when block sanding. Guide coat may come as:

Dry powder

Spray can

Both forms

Neither forms

Guide coat comes is spray and/or dry form.

Explanation

Guide coat comes is spray and/or dry form.

27. Special attention should be taken when mixing epoxy because:

It may have a strange reaction.

It may have an induction time.

It has an extremely short window.

It's just another type of primer, no special attention needed.

Some epoxy primers have an induction time. This is a determined time that the chemicals must be mixed together before using.

Explanation

Some epoxy primers have an induction time. This is a determined time that the chemicals must be mixed together before using.

28. What is the purpose of spraying epoxy primer?

Adhesion

Corrosion Protection

Adhesion and Corrosion Protection

Adhesion, Corrosion Protection, and Filling

The two main purposes of epoxy primer is adhesion and corrosion protection.

Explanation

The two main purposes of epoxy primer is adhesion and corrosion protection.

29. When painting an entire panel, sand the surface with ______ on a DA sander with an interface pad or by hand sanding.

150 - 300 grit

220 grit

400 - 600 grit

800 - 1000 grit

When final sanding a panel to apply base coat, 400 to 500 grit sandpaper should be used. 800 to 1000 grit is used if only applying clear coat.

Explanation

When final sanding a panel to apply base coat, 400 to 500 grit sandpaper should be used. 800 to 1000 grit is used if only applying clear coat.

30. When preparing a blend-within a panel or a blend panel, what grit of sandpaper should be used where only clear coat will be applied? (no color)

150 - 300 grit

320 grit

400 - 500 grit

800 - 1000 grit

800 grit or finer should be used where only clear coat will be applied. You may see the scratched through the clear if any coarser sandpaper is used to sand the surface.

Explanation

800 grit or finer should be used where only clear coat will be applied. You may see the scratched through the clear if any coarser sandpaper is used to sand the surface.

31. When preparing to primer, you should mask the area that has been repaired by taping a square off around the damaged area. This will prevent primer overspray from getting on the adjacent panels.

True

False

That will leave hard edges. Try back masking or moving your masking paper away from the damaged area. You do not want to prime all the way to the masking edge.

Explanation

That will leave hard edges. Try back masking or moving your masking paper away from the damaged area. You do not want to prime all the way to the masking edge.