Automotive Defect Removal & Buffing

After a vehicle has made most of its way through the repair shop process, one of the last areas for it to pass through is re-painting and detail before it gets back in the customer’s hands. After the re-painting has occurred in the paint booth, it is time to go over the paint job with a fine tooth comb to identify and remove any nibs or defects by sanding and buffing them clean. Follow the steps below for a flawless finish.

1

Defect Removal

Depending on the area size of material you need to remove will determine the fine grit that you use to begin sanding as well as the size of the Dual Action (DA) sander you’re using.  

Removal Amount Grit Sequence DA Sander

Large

1000 or 1200 grit, then move to 1500 grit

 6"

Small

1500 grit film disc with an interface pad

 3" at low speed

Do not start the DA until after it is in contact with the surface, using light pressure and keeping the DA flat. Work in small sections with a slow, steady movement, sanding in an up and down motion then a side to side motion with slight overlap. Once the desired finish is achieved, wipe the area with a microfiber cloth or blow with clean air. 

Best Practices - Defect Removal and Buffing - Intro

2

Scratch Refinement

Remove the interface pad from the DA and apply a foam-backed 3000 grit disc directly to the back-up pad. Lightly spray the disc as well as the surface to be sanded with water (using the moist disc and surface will flush debris from the surface and lubricate the cut.) Try to use light pressure and keep the DA sander flat when working in small sections with a slow, steady movement. Sand in an up and down motion then a side to side motion with slight overlap. Once the desired finish is achieved, wipe the area with a microfiber cloth.

Best Practices - Defect Removal and Buffing - Step 2

3

Buffing

You can choose to follow a two or three part process. If you would rather a two-part process, you may eliminate the second, optional step.

  1. Start with a clean Wool pad (always clean pad before any use) and apply Heavy Duty Compound to the work area and buff using medium pressure at 1200 – 1500 rpm, removing all sand scratches. Remove any residue and wipe clean with an Instant Detailer.

  2. (Optional) Using a Waffle Pad, apply Machine Glaze and buff using medium pressure at 1200 – 1500 rpm, removing all sand scratches. Remove any residue and wipe clean with an Instant Detailer.

  3. Using a Foam Pad, apply Foam Pad Polish and buff using medium pressure at 1200 – 1500 rpm, to remove any swirl marks and produce a high gloss finish. As always, finish by removing any residue and wipe clean with an Instant Detailer.

Tip for Added Protection: Hand Glaze may be used after using the Foam Pad Polish to achieve unparalleled depth and clarity. 

Best Practices - Defect Removal and Buffing - Step 3

4

Gloss Enhancement and Protection

Remove all buffing residue and add paint protection with Instant Detailer. Wipe clean with a microfiber cloth, and admire a job well done! 

Best Practices - Defect Removal and Buffing - Step 4

 

The car is ready to be returned to your happy customer.

 

 

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