Collision Blast - Spray Gun Adjustment And Spraying Techniques
- 1.
A high quality spray gun helps produce a professional paint job.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
This is true, a high quality spray gun will produce better results. Do not get the cheapest spray gun available for spraying base coat and clear coat. However, the more expensive does not always equal a better spray gun.Rate this question:
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- 2.
What is a pot life?
- A.
In regards to paint and refinish, there is no such thing.
- B.
This is the amount of time that a product can be stored in inventory before going bad.
- C.
This is the amount of workable time that a catalyzed coating has before it starts to harden.
- D.
This is referring to a pressure system, which uses a paint pot.
Correct Answer
C. This is the amount of workable time that a catalyzed coating has before it starts to harden.Explanation
On the technical data sheet, it will specify how long of a pot life each products has. This can be anywhere from minutes to hours. If the catalyzed product is in the spray gun longer than the recommended pot life, it will start to harden inside the spray gun.Rate this question:
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- 3.
It is not necessary to wear gloves when cleaning a paint gun.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Yes, you should always wear your PPE when working with paint chemicals.Rate this question:
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- 4.
To hand clean a paint gun:
- A.
set the gun in a pail of thinner and let it soap before cleaning.
- B.
use a squirt bottle and brushes to clean immediately after use.
- C.
tear the gun completely down and clean each piece separately every use.
- D.
just pull the trigger and spray all of the paint out. Once empty, the gun is ready for storage.
Correct Answer
B. use a squirt bottle and brushes to clean immediately after use.Explanation
You do not need to tear the spray gun completely appart after each use if you clean it immediately after each use. Simply using a spray or squirt bottle to rinse the gun clean, removing the fluid tip and brushing the fluid nozzle and fluid tip, then wiping all access thinner of will clean the spray gun. The key is to clean it immediately after each use.Rate this question:
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- 5.
What is the most common type of spray gun used in auto paint shops today?
- A.
Siphon Feed
- B.
Pressure Feed
- C.
Gravity Feed
- D.
Vacuum Feed
Correct Answer
C. Gravity FeedExplanation
A gravity spray gun is the most common spray gun used in paint shops today.Rate this question:
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- 6.
To determine what size of fluid tip and needle to use read the technical data sheet for the specific product that you are using.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Each product may recommend a different size. For example, primer surfacer may recommend 1.6 to 1.8. Base coat may require 1.3. To determine the correct fluid tip size read the technical data sheet.Rate this question:
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- 7.
The air pressure controls the __________ of the paint gun.
- A.
Fan pattern
- B.
Fluid
- C.
Atomization
Correct Answer
C. AtomizationExplanation
The atomization is the process of breaking the material into small drops, which is controlled by air pressure. The higher the pressure the more atomization (little drops). The lower the air pressure the less atomization (bigger drops.)Rate this question:
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- 8.
Atomization is the process of breaking the fluid down into drops.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The atomization is the process of breaking the material into small drops, which is controlled by air pressure. The higher the pressure the more atomization (little drops). The lower the air pressure the less atomization (bigger drops.)Rate this question:
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- 9.
Always set the air pressure exactly to what the technical data sheet states. Never try to re-adjust the air setting.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The recommendation is a good starting point, but the gun, your air set-up, and individual spraying techniques may require fine tuning the spray gun.Rate this question:
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- 10.
The fan pattern adjustment can adjust the gun to spray a small diameter circle.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The fan pattern adjustment controlls the how small or wide the pattern sprays. This can be anywhere from a small circle to a wide pattern.Rate this question:
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- 11.
The fluid adjustment adjusts the amount of fluid that is sprayed out of the gun by adjusting the how far the trigger can be pulled back.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The fluid adjustment acts as a trigger stop on the spray gun. Turing the adjustment clockwise will allow less fluid and turining the adjustment counter clockwise will increase the amount of fluid.Rate this question:
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- 12.
When learning how to paint, think of yourself as a:
- A.
Swing
- B.
Robot
- C.
Technician
Correct Answer
B. RobotExplanation
If you think of the robots that spray in the car plants, the robots spray accurate, even, and steady passes. Concentrate on distance, speed, angle, and overlap to achieve superior results.Rate this question:
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- 13.
Gun travel speed that is too fast may result in excessive mill thickness and runs.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
No, excessive mill thickness and runs would be caused by gun speed that is too slow. Gun speed that is too fast would result in the mil thickness being too thin and poor coverage.Rate this question:
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- 14.
If gun travel speed is adjusted, the distance must be adjusted at the same time.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Always adjust the travel speed and distance at the same time. If you are further away, you need to slow down. If you get closer, you will need to move faster.Rate this question:
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- 15.
What is the recommended gun distance when learning how to paint?
- A.
3 - 4 inches
- B.
12 - 14 inches
- C.
4 - 6 inches
- D.
8 - 10 inches
Correct Answer
D. 8 - 10 inchesExplanation
You can produce a high quality paint job at 8 to 10 inches. This also provide more control for the person spraying. As you become more comfortable with the spray gun, you can try spraying closer, but you will have less control. For example, if you hesitate for a split second when spraying close, you are probably going to have a run.Rate this question:
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- 16.
Gun angle must always reflect the same angle as the panel being sprayed.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
It is very important to always spray the same angle as the substrate you are spraying. If the gun is not angeled correctly, you will not get propper coverage, which will cause a number of problems.Rate this question:
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- 17.
What is the recommended overlap for most solvent based coatings?
- A.
25%
- B.
50%
- C.
75%
- D.
100%
Correct Answer
B. 50%Explanation
Most solvent based paints require 50% overlap.Rate this question:
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- 18.
There is really no difference between a medium-wet and full-wet coat. It's just terminology that means the same thing.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
There is a difference between the two. To determine which is needed for the product that you are spraying, read the technical data sheet for the products being sprayed.Rate this question:
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- 19.
Base coat should be sprayed:
- A.
Full-wet to achieve full hiding and mill thickness quicker.
- B.
medium-wet trying not to spray too wet. Only trying to achieve full hiding.
- C.
Closer and slower than clear coat
Correct Answer
B. medium-wet trying not to spray too wet. Only trying to achieve full hiding.Explanation
Base coat should be applied with a medium-wet coat. You should never try to apply basecaot too heavy, as this will cause paint problems, such as mottling.Rate this question:
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- 20.
An 1.6 MM fluid tips is recommended for applying base coat.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
No, the recommended fluid tip is a 1.3 MM.Rate this question:
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- 21.
An 1.3 MM fluid tip is the recommended size of gun to use for primer surfacer.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
No, the recommended fluid tip for primer surfacer is 1.6 to 1.8.Rate this question:
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- 22.
All of these will affect your gun adjustments EXCEPT
- A.
Fluid Adjustment
- B.
Air Pressure
- C.
Fan Pattern Adjustment
- D.
Lighting
Correct Answer
D. LightingExplanation
Lighting is very important to see the material being applied, but does not affect your gun adjustment.Rate this question:
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- 23.
Arching is the process of releasing the trigger half way so only air comes out of the spray gun.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
No, the process of releasing the trigger half way to only allow air is called triggering.Rate this question:
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- 24.
What paint defect occurs by applying the material too thick?
- A.
Dry Spray
- B.
Fish Eye
- C.
Runs
- D.
Poor Coverage
Correct Answer
C. RunsExplanation
Applying the material too thick will cause the paint to run.Rate this question:
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Current Version
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Mar 21, 2022Quiz Edited by
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Jan 23, 2011Quiz Created by
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