Paint thickness gauge Etari ET 115S in action
Why the need for a paint thickness gauge?
When you are going to polish an area, it helps to know how much paint you have to play with. You remove paint by polishing, so every time a car gets polished, you remove a very fine layer of paint. Removing too much means you can either go through the clear coat (which can cause oxidation of the colored coat), or you can even go through the colored coat. Which means that you have a “strike through”, and the primer coat is showing.
Factory paint thickness on cars
On average, most new complete paint thickness on cars will be around 120 µm. However, this is just an average. If you would measure 10 brand new cars, and then calculate the average of each panel, you’ll end up with roughly 120 µm. On average the layers are reasonably equally divided in 3 layers of 40 µm thick.
However, this is just an average and paint thickness on some cars (mostly Korean and Japanese) can be 80...90 µm while on others it can be 170...190µm like some Mercedes-Benz models.
Paint thickness gauge Etari ET 115S specifications
+ Suitable for measurements on iron / steel and non-ferrous metals like aluminium
+ Accuracy: ±10μm from 0 to 199μm, ±(3%+10μm) from 200μm to 2000μm
+ Automatic identification whether metal is ferrous or non-ferrous
+ Measuring range: 0 to 2000 μm (for iron / steel) and 0 to 1000 μm (for non-ferrous metals like aluminium)
+ Operating temperature range -13F (-25°С) to 122F (+50°С)
+ 2x uncoated metal plates for calibration (ferrous and non-ferrous) included