What is the correct sequence of events to tap a blind hole?

The correct sequence of events to tap a blind hole is primarily focused on the types of taps used and their relationship to the hole being created. In this case, choosing the taper, plug, and bottoming method aligns with the process of tapping a blind hole effectively.

Taper taps start the threading process, as they have a tapered end that allows for easier entry into the hole and helps to guide it into alignment. Once the initial threads are established with a taper tap, a plug tap is then utilized to create deeper threads. This tap has a more straight-cut design that allows for further honing of the beginning threads into more durable threads capable of holding future fasteners securely.

After using the plug tap, if the hole requires complete threading all the way to the bottom, a bottoming tap is then employed. This tap is designed to create threads very close to the bottom of the blind hole, ensuring that maximum thread length is achieved for maximum engagement with screws or other fasteners.

This systematic approach of using taper, plug, and bottoming taps reflects best practice in creating internal threads within a blind hole, ensuring not just thread integrity, but also that the hole itself has been properly prepared for the final assembly. Alternatives that involve reaming or different methods of