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Vehicle Surface Prep
| Question | Answer |
|---|---|
| Vehicle Preparation | all the final steps prior to (before) painting/refinishing. |
| Initial Washing | a complete cleaning of the vehicle to remove mud, dirt, and other foreign matter |
| Surface Evaluation | a close inspection of the paint to determine its conditions. |
| Paint Film Breakdown | cracking, blistering etc of paint surface. |
| Paint Adhesion Check | sand through a small area of the old finish and feather edge it. If the feathered edge does not break or crumble it may be properly adhered. |
| Preexisting Damage | - Damage that existed on the vehicle prior to it coming to your shop, cracking paint, scratches, acid rain damage, etc. |
| Acid Rain | - caused by the release of various chemicals into the atmosphere, the chemicals are absorbed by rain water and form acids. |
| Industrial Fall out | - metallic particles are released into the atmosphere from steel mills, foundries and railroad operations, they adhere to the paints surface and corrode when exposed to moisture |
| Hard Water Spotting Damage | - when rain or tap water dries on the painted surface, the water evaporates leaving hard minerals on the paint surface. |
| UV Radiation Damage | -results from excessive exposure of the paint film to the sun’s radiation. |
| Chemical Stripping | - uses a chemical action to dissolve and remove paint down to bare metal. |
| Abrasive Blasting | - involves using air pressure, a blasting gun and an abrasive medium to remove paint |
| Machine Grinding | - suitable for removing the finish. Grind using a 36/40 grit disc or sandpaper on a grinder or D.A. (dual action sander) |
| Sanding | - prepares the surface for painting and body filler, creates proper adhesion. |
| Coated Abrasives | - sandpaper |
| Open Coat Sandpaper | - prevents clogging of sandpaper, it's good for sanding old paint, body filler, plastic and aluminum, |
| Closed Coat Sandpaper | -provides a finer finish (finer grit) and is commonly used when wet sanding |
| Grit Sizes | - vary from coarse to fine grit, the lower the number the coarser the grit. |
| Power grinding | - fastest method to remove material |
| Power Sanding | uses an air sander to begin smoothing operations, uses a D.A. |
| Bare Metal Sanding | - done to smooth rough metal surfaces. |
| Paint Sanding | - needed when the finish is rough or in poor shape and to level and smooth primed areas. |
| Block Sanding | -back and forth action with the sandpaper mounted on a blocking tool. |
| Dry Sanding | - is done with coarser non waterproof sandpaper, without using water. |
| Wet Sanding | - is done with finer waterproof sand paper, using water to flush away sanded particles. |
Created by:
abogner105
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