(F) Surface Defect Removal Without Repainting
Exterior paint surface damage or imperfections, where the primer coat does not show through, should be restored without repainting. The restoration of gloss and luster, after the condition has been repaired, is possible with new techniques and improved materials.
The following procedure is applicable to surface conditions such as dirt particles, orange peel, runs, sags, industrial fallout stains, swirl marks, light scratches and other minor surface imperfections. For dirt particles or scratches in several localized areas, the entire panel should be refinished to maintain a uniform appearance.
PREPARATION
To repair the affected surface it must be clean and dry. Mask off adjacent panels, mouldings, stripe and character lines as required.
CAUTION: EYE PROTECTION, AND FACE MASK SHOULD BE WORN. RINGS, BRACELETS, WATCHES AND BELT BUCKLES MUST BE REMOVED TO PREVENT ACCIDENTAL DAMAGE TO PAINT FINISH.
SERVICE PROCEDURE
1. Remove sanding marks with rubbing compound.
2. Swirl marks, evident after buffing, are removed by polishing.
3. Remove light scratches and small dirt particles with a power buffer and medium buffing compound followed with polishing.
4. Remove deeper scratches and heavy dirt particles or orange peel, by wet sanding.
5. Buff with compound to remove the sanding marks and then polish to remove the swirl marks from the buffing operation.
NOTE: PERFORM A TRIAL REPAIR WITH A SMALL AREA. FIRST, TRY POLISHING; IF THIS IS NOT SUCCESSFUL, TRY BUFFING AND, FINALLY, USE WET SANDING TO REMOVE THE CONDITION. USE MOST EFFECTIVE TECHNIQUE ON REMAINDER OF AREAS. AN OUTLINE OF THE COMPLETE PROCEDURE AND REQUIRED MATERIALS FOLLOWS.
POLISHING - VERY MINOR SCRATCHES OR SWIRL MARKS AND/OR RESTORING A DULL FINISH
1. Apply a small amount of Meguiar's Mirror Glaze, or equivalent, to the affected panel (or pad).
2. Use a suitable electric or air powered polish/buffing wheel (1750 max. RPM) and a Meguiar's Finesse Polishing Pad, or equivalent, to polish the affected area until all swirl marks are gone and desired luster is obtained.
3. When polishing, keep the pad flat against the surface. Do not bear down. The weight of the buffer is sufficient.
CAUTION: DO NOT MIX PRODUCTS! USE A SEPARATE, DEDICATED BUFFING PAD FOR EACH PRODUCT TO ACHIEVE DESIRED RESULTS.
Variable speed buffers are available in a variety of buffing speeds. The recommended speed range is 1200-1750 RPM.
COMPOUNDING - LIGHT SCRATCHES, SMALL DIRT PARTICLES, MINOR GRIND MARKS, AND SANDING MARKS
1. Apply Meguiar's Rubbing Compound (medium) or equivalent to the panel with a clean compound pad on the wheel.
2. Spread the compound evenly and continue buffing until the condition is removed.
3. Keep the wheel flat to the surface and use light to moderate pressure and long strokes.
4. Periodically check the finish and add compound as required.
5. When buffing is complete, polish the panel as described previously.
Twisted wool cutting pads are the most effective compounding pads to use with Glaze Machine Cleaner for removing paint defects and heavy oxidation. Following the use of a wool compounding pad, it may be necessary to polish the finish with No. 2 Mirror Glaze Hi-Tech Cleaner using a Mirror Glaze Finesse Polishing Pad to remove the deep swirl marks.
GENERAL TECHNIQUES AND HINTS
^ "Foam" buffing pads create added gloss and depth of color on all types of paint finishes without creating buffer swirl marks.
^ When "buffing out" oxidation or other paint defects with a cleaning material, use a liberal amount of material, slower buffing motion and added downward pressure to increase cutting action.
^ Always apply cleaner to buffing pad, not directly on the oxidized paint surface. Dry paint absorbs material into pores upon contact.
^ Always keep the face of the buffing pad completely flat to the surface, reducing the risk of buffer swirl marks. Watch your pad, especially on angled surfaces, to be certain that it stays flat.
^ Avoid short rapid strokes. Move the buffer slowly across the surface using long straight motions and overlap by 50% the buffing pattern left by the previous pass. This insures uniform coverage and allows both material and buffer to perform at maximum efficiency.
^ Avoid buffing directly on raised character lines. The reduced paint film on these surfaces increases the risk of paint burn through. It is best to buff up to them from each side.
^ Always use a "wet buff" technique on a basecoat/clearcoat finish. This is a precaution against buffer swirls. Stop buffing just after the product begins to break down and before an overall dry, glossy finish appears. After "wet buffing", use a towel to wipe off the excess material.
^ Always use a "dry buff" technique on light colored, conventional paint finishes. Continue buffing until the material breaks down and only a slight film remains for final wipe off.
^ If a paint blemish remains after buffing, reapply a small amount of material over the blemish. Confine your buffing strokes to the immediate area of the blemish while applying additional downward pressure and keeping the pad flat.
NOTE: ALWAYS KEEP THE PAD MOVING AND LIMIT YOUR STROKES OVER THE BLEMISH TO PREVENT EXCESSIVE HEAT BUILD-UP AND POSSIBLE BURN THROUGH. STOP IMMEDIATELY IF THE SURFACE BECOMES TOO HOT TO LAY THE PALM OF YOUR HAND ON IT.
NOTE: HEAT BUILD-UP: WHEN BUFFING CREATES EXCESSIVE HEAT, HAZING MAY APPEAR ACROSS THE SURFACE BEING BUFFED AND THE PRODUCT MAY DRY LIKE A FILM AND REFUSE TO BUFF OUT. TO REMEDY, WIPE THE AREA DOWN WITH COOL WATER, DRY THE SURFACE AND RESUME BUFFING ... AT A LOWER RPM IF POSSIBLE.
NOTE: STATIC: STATIC ELECTRICITY MAY BE PRESENT ON PAINTED FIBERGLASS/PLASTIC SURFACE BEING BUFFED, THE MATERIAL MAY DRY LIKE A FILM OR TURN "GUMMY" AND BEGIN TO BALL UP. TO REMEDY, GROUND THE SURFACE BEING BUFFED TO METAL.
WET SANDING
Paint defects and sanding marks must be completely removed without using compounds and abrasive cleaners that scar the finish.
Mirror Glaze Hi-Tech Finesse Sanding Papers provide uniformity in grit particle size and distribution. Using these precision made sanding papers, water sanding marks can be removed with Meguiar's cleaner and finesse polishing pads.
^ Typical paint defects that are repaired with this system include: dirt-in paint, solvent pop, cratering, orange peel, drips, scratches, water spots, and acid rain.
^ Always use the least abrasive (highest grit) sanding products possible to do this job.
The following wet sanding procedure utilizes light grit sand paper or sanding blocks for removal of surface damage. These materials cut quickly leaving a uniform finish requiring a minimum of buffing to restore gloss.
PROCEDURE
1. Squeeze water to flush the area to be sanded. Continue to flush water to the surface during sanding for maximum lubrication.
2. Use small circular motions to contain the abrasion to the immediate area of the defect. Keep the blocks in water when not in use.
3. If the sanding block is cutting too slow, switch to a lower grade block and resume sanding. When 90% of the defect is removed, switch to a 2000 grade Finesse Sanding Paper or Sanding Block to finish smoothing and prepare the surface for buffing.
4. Finesse Sanding Blocks can be shaped to work on any angle. When the block is wet, rub it against a dry sanding block for shaping.
5. When using Finesse Sanding Papers, wrap the paper tightly around a E-7200 Backing Pad. This pad evenly distributes pressure over the entire surface of the sanding paper. This creates a uniform sanding pattern.
6. Plan your strokes to limit the abrasion to the smallest area possible.
NOTE: ALWAYS SAND IN ONE DIRECTION AND KEEP YOUR STROKES STRAIGHT.
7. Always finish sanding with 2000 Grit Finesse Sanding Paper. This eliminates the need for compounding.
8. Buff out sanding marks by applying Meguiar's Cleaner with a Finesse "Foam" Polishing Pad. Follow with a Mirror Glaze Polish for swirl-free gloss.
WARNING: OUR ENVIRONMENT IS PRECIOUS - PLEASE USE PROPER DISPOSAL TECHNIQUES FOR ANY VOLATILE ORGANIC COMPOUNDS (V.O.C.'s) OR EXCESS MATERIALS
RUNS AND SAGS REMOVAL
This procedure consists of shaving the run or sag flush with a commercial single edge razor blade, shaving file or sanding with a hard block and then compounding.
NOTE: IF IT IS NECESSARY TO SHAVE RUNS AND SAGS WITH A RAZOR BLADE, FIRST DULL THE CORNERS WITH SANDPAPER TO AVOID SCRATCHING THE ADJACENT PANEL FINISH.
MEGUIAR'S PRODUCTS
PART
NUMBER GRADE PART NAME
S-1005 1000 Mirror Glaze Hi-Tech Finesse Sanding Papers -
Half Sheets
S-1205 1200
S-1505 1600
S-2005 2000
S-1000 1000 Mirror Glaze Hi-Tech Finesse Sanding Papers -
Full Sheets
8-1200 1200
8-1500 1500
S-2000 2000
E-7200 - Mirror Glaze Hi-Tech Finesse Backing Pad
E-2000 - Mirror Glaze Hi-Tech Tach Sponge
K-400 400 Mirror Glaze Hi-Tech Finesse Sanding Blocks
K-1000 1000
K-1500 1500
K-2000 2000
K-3000 3000
Other Applicable Articles: 82-3-3