CAADE Repair and Refinishing Processes 4 — Questions and Answers
Question 1: A 'complete refinish' versus a 'panel refinish' on an estimating guide primarily differs in:
- The type of paint system used
- The amount of masking required and labor time assigned (Correct answer)
- Whether a sealer coat is needed
- The number of clear coat passes applied
Correct answer: The amount of masking required and labor time assigned
A complete refinish requires masking the entire vehicle except the panel, while a panel refinish involves less masking, reflected in different labor times.
Question 2: Corrosion protection inside a replaced rocker panel is typically applied using:
- Brush-on epoxy primer
- Wax- or oil-based cavity wax injected through access holes (Correct answer)
- Undercoating sprayed from below
- Seam sealer applied from the exterior
Correct answer: Wax- or oil-based cavity wax injected through access holes
Cavity wax is injected into enclosed sections like rockers to coat interior surfaces inaccessible after welding, preventing internal rust.
Question 3: During color matching, a paint that appears too yellow compared to the vehicle panel should be adjusted by:
- Adding white to brighten the mix
- Adding a blue or violet toner to neutralize the yellow cast (Correct answer)
- Increasing the reducer ratio
- Applying more clear coat layers
Correct answer: Adding a blue or violet toner to neutralize the yellow cast
Blue and violet toners are opposite yellow on the color wheel and can neutralize an excess yellow cast in the mixed color.
Question 4: Waterborne basecoat systems differ from solvent-borne systems in that they:
- Do not require a clearcoat topcoat
- Use water as the primary carrier and require forced air or IR drying between coats (Correct answer)
- Produce a thicker film build per coat
- Cannot be used on plastic substrates
Correct answer: Use water as the primary carrier and require forced air or IR drying between coats
Waterborne paints use water as the carrier and must have moisture driven off with air movement or infrared heat before clearcoating.
Question 5: An estimator writing an estimate for aluminum panel repair should note that aluminum:
- Can be repaired using the same MIG wire as steel
- Requires dedicated aluminum-specific tools, wire, and techniques to avoid contamination (Correct answer)
- Is easier to straighten than steel due to its softness
- Can be welded with a standard steel-flux core wire
Correct answer: Requires dedicated aluminum-specific tools, wire, and techniques to avoid contamination
Aluminum is highly susceptible to contamination from iron particles, requiring separate dedicated tools, aluminum MIG wire, and modified techniques.
Question 6: The term 'included operations' in collision estimating refers to procedures that:
- Are billed at a separate flat-rate
- Are considered part of a larger operation and are not billed separately (Correct answer)
- Must be performed by a specialist sublet shop
- Require OEM authorization before being performed
Correct answer: Are considered part of a larger operation and are not billed separately
Included operations are tasks assumed to be performed as part of a primary repair operation, so labor time is embedded in that operation's time.
Question 7: When applying body filler over a repaired metal surface, the filler should be applied:
- Over epoxy primer for best adhesion and corrosion resistance (Correct answer)
- Directly to bare, clean, scuffed metal with no primer underneath
- Over a sealer coat to prevent shrinkage
- On top of the existing factory primer when possible
Correct answer: Over epoxy primer for best adhesion and corrosion resistance
Applying filler over epoxy primer provides superior corrosion protection and adhesion compared to bare metal, per most OEM and industry guidelines.
CAADE Repair and Refinishing Processes 4
A 'complete refinish' versus a 'panel refinish' on an estimating guide primarily differs in: