On average, most new complete paint thickness will be around 120 µm. This means that a paint thickness gauge can only give you an indication, and little insurance of safety. These all have very different thicknesses. The same goes for the colored coat and the clear coat. 1 panel can have a primer coat of 30 µm, and the panel next to it can have a primer coat of 50 µm thick. The thickness of each coat varies widely. However, it’s not that simple in real life. And 33 times before going through the colored coat. This would mean that you can polish the surface 16.5 times before going through the clear coat. 150 µm could then be divided into 3 layers of 50 µm. In a theoretical world, you could say that the paint is made up out of a primer, a colored coat and a clear coat. For example, you measure a thickness of 150 µm, and you know you remove 3 µm with every time you polish, you know you are a long way from reaching the bottom. Which means that you have a “strike through”, and the primer coat is showing. Removing to much means you can either go through the clea coat (which can cause oxidation of the colored coat), or you can even go through the colored coat. You remove paint by polishing, so every time a car gets polished, you remove a very fine layer of paint. This is called a strike through When you are going to polish an area, it helps to know how much paint you have to play with. The polish has gone through the clear coat, and at places even through the colored coat. This means you know exactly how much clear coat you have to work with. The very expensive models can give you a very precise measurement of the thickness of each layer. The more expensive models can help you in the case of glass fiber or plastic body panels. The cheaper models are used to just get a rough idea on what you are working with.
The very expensive models can even measure the thickness of each layer independently. The more expensive models can measure the distance between the sensor and any body panel underneath the paint (even if it isn’t metal). The cheaper models can only measure the distance between the sensor and a metal panel. Paint thickness gauge that can measure independent layers There are a few different paint thickness gauges. Because this is the distance between the sensor and the body panel underneath the paint.
For example, if the total thickness of the paint is 0.2 cm (0.08 inch), the display will show 2000 µm (micrometre). That distance is the thickness of the paint. The device will then measure the distance between the body panel underneath the paint, en the sensor. You place it perpendicular to the surface. This sensor is than put on the surface of the panel you want to measure. The paint thickness gauge has a sensor that sticks out of the bottom of the device, or is connected via a wire with the device. This gives you an indication of how much paint you have left to work with. This way you can measure the thickness of the paint. Sent from my iPhone using FerrariChat.A Paint Thickness Gauge (often abbreviated to PTG, and also called a Paint Depth Gauge) is an electronic device that measures the distance between the body-panel and the sensor. I will find my paint thickness log and post what my readings were, I did them several months ago. The areas with the PPF were also measured and when the thickness of the PPF was discounted, the paint was in line with the rest of the uncovered part of the car. My 458 checked out and appeared to have all factory original paint surfaces, which verified what I was told when I bought it. These small units are great for a quick check on a possible new/used car purchase to check if areas have been repaired/repainted. The readings will vary based on the place you measure on the car, as the paint may vary at different locations on the car from the factory. These units cost several thousand dollars each, so you have to *really* want to know more detailed information about your paint to justify the expense.
#CLEAR COAT DEPTH GAUGE PRO#
I am planning to get a high end pro unit that will read each layer over the substrate, such as primer, base coat and clear coat. The front clip and some other surfaces have PPF on them which will affect the reading since this unit measures total thickness, not the individual layers on top of the substrate.
I have used it only once so far on my 458. (If you buy a meter, make sure it will work on non-ferrous surfaces like on your 458, as some will not read aluminum). It’s a small handheld unit that will work on ferrous and non-ferrous surfaces. I recently purchased a CAYSYS DPM-816 Pro coating thickness gauge meter from Amazon to check the paint film thickness on my 458.
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