Here's how they work:
1. Drilling: A hole is drilled slightly larger than the diameter of the Molly screw's body but smaller than the toggle's diameter.
2. Inserting the toggle: The toggle, which is a spring-loaded wing or butterfly-shaped device, is inserted through the hole and pushed into the wall cavity.
3. Attaching the screw: The screw is then threaded into the toggle, forcing it to expand inside the wall.
4. Secure hold: The expanded toggle creates a tight fit inside the wall cavity, providing a solid anchor point for the screw.
Advantages of Molly screws:
* Stronger hold: They provide a significantly stronger hold than standard screws in hollow walls.
* Versatility: They can be used for a wide variety of applications, including hanging heavy objects, installing shelves, and attaching light fixtures.
* Ease of use: They are relatively easy to install, especially compared to other methods like using wall anchors.
Important Considerations:
* Wall type: Molly screws are not suitable for all wall types. They work best in hollow walls with sufficient depth to accommodate the toggle.
* Weight limit: Each Molly screw has a specific weight limit. It's important to choose the appropriate size and type for the weight of the object being attached.
* Installation: Proper installation is crucial for achieving a secure hold. Ensure the hole is drilled correctly, and the toggle is fully expanded inside the wall.
In summary, Molly screws provide a reliable and convenient way to secure objects to hollow walls by utilizing a clever toggle mechanism that expands inside the cavity, creating a strong anchor point.