How do you ensure a fluid-tight seal when using fasteners?

To ensure a fluid-tight seal when using fasteners, employing multiple techniques and approaches is essential. Each of the methods mentioned contributes to achieving an effective seal.

Using a special coating can enhance sealing properties by reducing the likelihood of leaks. These coatings can be designed to fill gaps or imperfections in the surface, thus minimizing the chance of fluid escape.

Chamfering the holes correctly is also crucial. This process helps to create a more precise fit for the fastener, thereby decreasing the chances of misalignment that can lead to leaks. Proper chamfering allows the fastener to seat more securely and evenly against the material, which is vital for creating a reliable seal.

Additionally, selecting the right type of cutter ensures that the holes are properly sized and shaped. A properly executed cut can prevent burrs and irregularities that might compromise the integrity of the seal. Ensuring that the fasteners fit snugly in the holes is vital for maintaining a fluid-tight connection.

By integrating all of these strategies—using special coatings, chamfering holes, and employing the correct cutting techniques—one maximizes the effectiveness of the fasteners in achieving a secure and fluid-tight seal. Thus, the comprehensive approach of "all of the above" is indeed the correct choice.