What is a shuttering magnet?

A shuttering magnet is a specialized industrial tool used in concrete construction. Here's a point-by-point explanation of its purpose and operation:

1. Core Function
Acts as a temporary clamp to secure concrete formwork panels during pouring.
Replaces traditional mechanical fasteners (like ties or bolts) by using magnetic force.
2. Working Principle
Houses powerful permanent magnets (typically neodymium) inside a steel casing.
Features an on/off switch: When "on," magnetism activates; when "off," the magnetic field is internally redirected.
Requires direct contact with steel-backed formwork or surfaces with embedded steel.

3. Key Applications
Wall/Column Formwork: Holds vertical forms rigidly aligned.
Preventing Blowouts: Reinforces forms against liquid concrete pressure.
Accessory Mounting: Temporarily suspends vibration equipment, sensors, or conduits inside forms.

4. Physical Design
Robust steel housing resistant to impacts and moisture.
Flat contact surface for maximum adhesion to formwork.
Handle or knob for safe placement/removal.

5. Operational Process
Placement: Positioned against the exterior of steel formwork panels.
Activation: Switch flipped to engage magnetism, locking forms in place.
Removal: Switch disengaged after concrete sets, allowing easy detachment.

6. Advantages
Speed: Faster installation than bolts or welding.
Reusability: No disposable parts required.
No Damage: Leaves no holes in forms or concrete surfaces.

7. Limitations
Only effective on ferromagnetic surfaces (steel forms or structures).
Requires clean, rust-free contact points for full magnetic strength.

8. Safety Aspects
Always handled with gloves to prevent pinched fingers.
Never used near electronic devices or medical implants.
Shuttering magnets streamline formwork assembly, reduce labor time, and maintain form integrity during concrete placement. Their efficiency makes them essential in modern high-precision construction projects.