When it comes to car detailing and machine polishing, understanding different paint finishes is crucial to achieving the best results. Recently, we worked on a 1991 Nissan 300zx that showcased an older style of paint finish, highlighting the importance of knowing how various paint types behave during polishing and restoration.
The Importance of Paint Finishes in Detailing
Before diving into the polishing process, it’s essential to identify the type of paint finish on a vehicle. The paint finish determines how the surface responds to polishing compounds, pads, and treatments. For instance, the 1991 Nissan 300zx had what is known as a Direct Gloss (2K) paint finish. This type of finish combines both the colour and lacquer into one layer, a technique that’s quite rare in modern automotive paints.
Direct Gloss (2K) vs. Modern Paint Finishes
Direct Gloss (2K), also known as single-stage paint, was more commonly used in older vehicles but is seldom found in modern cars today. One reason is that it doesn’t offer the same durability as the Clear Over Base (COB) finish, which is the standard for most modern vehicles. Unlike COB, where a clear coat is applied over the base color, Direct Gloss combines the color and protective finish into a single layer.
When we machine-polished the Nissan 300zx, we observed colour transfer onto the polishing pad, which is typical of Direct Gloss finishes. The pads turned red as the surface layer of paint was being cut and polished, something that wouldn’t happen with a COB finish, where only the clear coat would be polished.
The Evolution of Paint Finishes: Cellulose Paints
Before Direct Gloss paints, there were Cellulose paints, which are now virtually obsolete due to the hazardous substances used in their formulation, such as isocyanates. These paints were once popular for their ease of application and glossy finish, but modern regulations and advancements in paint technology have made them a thing of the past.
Restoring Faded Red Paint: Nissan 300zx Case Study
The Nissan 300zx we worked on had a classic red finish that had become sun-bleached over time. Red paints, especially older ones, tend to fade when exposed to UV rays for prolonged periods. This fading results in a loss of depth and gloss, leaving the car looking dull.
To restore the paint, we performed a multi-stage machine polish to carefully bring back the depth and gloss of the paintwork. By removing the sun-damaged layer and polishing the surface, we were able to revive the vibrant red color. After polishing, we sealed the finish using Swissvax Carnauba wax, which helps lock in the shine and protect the paint from future damage.
Why Paint Finish Matters in Car Detailing
Understanding the type of paint finish on a vehicle is essential for effective detailing and machine polishing. Direct Gloss paints behave differently from COB finishes, and if not treated correctly, improper polishing techniques can damage the paint rather than restore it.
By identifying the paint type, using the right combination of polishing compounds and pads, and applying protective treatments like Swissvax Carnauba wax, you can achieve long-lasting results that enhance the vehicle’s appearance and protect it from the elements.
If you’re looking to bring back the shine on your classic car or need advice on how to properly detail and polish different paint finishes, contact us today for expert detailing services.
