Selecting a diamond micro drill starts with the hole you must produce. Define the material, diameter limits, depth, position, edge condition and production requirement. Then match the tool construction and geometry to the capability of your machine and inspection process.

Composite machining rarely fails because the abrasive is simply "not hard enough." The more common problem is a mismatch between the composite structure, tool construction, machine conditions, and the quality requirement. A CFRP component may suffer delamination while a GFRP part shows fiber pullout. Aramid can produce fuzzing, honeycomb can collapse at the cell wall, and ceramic matrix composites can develop matrix cracking or fiber damage. The same diamond tool specification for composites should not be expected to solve all of these problems.