How should one start the installation of screws to prevent cross threading?

The recommended approach to start the installation of screws is to begin by hand. This method allows for better control and precision when aligning the screw with the threaded hole. When you start by hand, you can feel whether the threads are engaging properly, which is crucial in preventing cross-threading. Cross-threading occurs when the screw threads do not align correctly with the threads of the hole, leading to damage and making it difficult to secure the screw properly.

Using a power drill right away is not advisable, as it can apply too much torque before ensuring that the screw is correctly positioned. This can easily lead to misalignment and the consequent issue of cross-threading. Employing a hammer to secure a screw is generally inappropriate and risks damaging both the screw and the surrounding material. Likewise, starting with a wrench does not provide the necessary tactile feedback to ensure the screw is aligned correctly, which increases the chances of an incorrect thread engagement.

Thus, starting by hand is both a safe and effective method that helps maintain the integrity of the screw and the assembly, facilitating a successful installation.