Identify Hardened Material for Drilling

What happens here

The demonstrator begins by presenting a Nicholson file, explaining that it is exceptionally hard, measuring 67 on the Rockwell diamond scale (which goes up to 100). He challenges the audience to consider how difficult it would be to drill through such a material with conventional tools, setting the stage for a demonstration of a specialized solution.

Goal: Understand the material's hardness and the inherent difficulty of drilling it with standard tools.