Boring Thickness Tool
The Rhopoint Boring Thickness tool is used to create a controlled, shallow conical crater in a coated surface, thereby exposing the full coating stack in cross-section for measurement and analysis.
Boring Thickness Tool Parts
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How it works:
- The tool uses a rotating drill that is gently pressed against the sample surface. The weight of the Turn Wheel and Collet assembly is designed to exert a good amount of pressure for most coatings.
- As the Turn Wheel is rotated, it gradually removes material in a circular motion, forming a tapered (conical) crater rather than a straight hole.
- Because the crater is angled, each layer within the coating stack is spread out along the slope.
- This effectively magnifies the apparent thickness of each layer, making them easier to observe and measure using the Aesthetix.
- The process continues until the crater passes through all coating layers and slightly into the substrate, ensuring the complete stack is revealed.
In summary: Instead of drilling a simple hole, the tool creates a precise angled cross-section, allowing accurate measurement of coating thickness by analysing the exposed layer widths along the crater surface.
Using the Boring Thickness Tool:
WARNING: Boring drills are sharp, handle with extreme care.
Remove the base cover to access the drill 
Select the drill based on the guide below: 
Insert the drill into the collet aligning the edge of the collet with the step in the drill 
Tighten the collet, the drill height is now set
If the surface of the sample is light make a dark area using a black paint marker
If the surface of the sample is dark make a light area using a white paint marker
Holding the turn wheel up to avoid the drill hitting the surface align the tool over the marked area
Let the turn wheel lower until the drill hits the drilling surface, hold the main body to prevent movement and rotate the turn wheel until the desired crater is formed (this can be checked by gently lifting the drill)
You are now ready to measure the thickness of your coating