What is the expected taper?
Taper is usually introduced as a result of the laser drilling process and the entrance diameter is usually larger than the exit diameter. Taper increases with decreasing laser fluence on target and to a certain extent may be controllable. Taper issues also become more important as hole sizes decrease and part thickness increases. As a general rule, expect about 6 to 10 degrees included angle taper. Larger tapers can also be made through clever set up of optics and beam delivery.
