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  • Magnetic Steel Triangle Chamfer
  • Magnetic Steel Triangle Chamfer
  • Magnetic Steel Triangle Chamfer
  • Magnetic Steel Triangle Chamfer

Magnetic Steel Triangle Chamfer


Magnetic steel triangle chamfer is also called magnetic chamfer, magnetic reveal strip, precast concrete chamfer, formwork magnet chamfer, etc.

Magnetic steel triangle chamfer is a magnetic shuttering solution for precast concrete formworks. It is an essential accessory to precast concrete industry. It is designed to be fixed on the formworks to create beveled edges on corners and faces of concrete wall panels and small concrete items. It is made of high quality steel with embedded strong Neodymium magnets, which at the surface of the chamfer ensure fast and accurate placement of the chamfer in steel formwork construction without slipping or sliding. The magnetic chamfer is isosceles right triangle shaped and can be delivered in several different sizes with magnets on single side, double sides or the hypotenuse along the full 100% length or just along 50% of the length. Thanks to being used by many customers, some of our magnetic chamfers have been recognized as the standard design or size in the precast concrete industry.


Easy to operate

Reusable and durable

Quick to position, remove and clean

Highly universal using in the most precast concrete systems 

Much stronger adhesive force and longer service life than the rubber chamfer

No screws, bolts or welding necessary to exactly position chamfers on formworks therefore preserving surface finish to increase the service time

Excellent quality result on the concrete panels due to much of the building finish problems eliminated

Advantages over Competitors:

Unrivaled competitive strength in the most important component, Neodymium magnet to ensure magnetic chamfer quality, because Horizon are originating from and still in Neodymium magnet manufacturing

Quality first. Confident in quality and to accept terms of payment like 100% T/T after customers’ receipt of our shuttering magnet

More sizes available to save tooling cost

Standard sizes in stock and available for immediately delivery

Custom-made solutions available upon request

Technical Data for Horizon’s Popular Models of Magnetic Steel Triangle Chamfer:

Part NumberA
Length of MagnetType of Magnetized SideMaximum Operating Temperature
HM-ST-10A101014300050% or 100%Single80
HM-ST-10B101014300050% or 100%Double80
HM-ST-15A151521300050% or 100%Single80
HM-ST-15B151521300050% or 100%Double80
HM-ST-20A202028300050% or 100%Single80
HM-ST-20B202028300050% or 100%Double80
HM-ST-25A252535300050% or 100%Single80
HM-ST-25B252535300050% or 100%Double80

Maintenance and Safety Precautions:

Fix the magnetic chamfer on the formworks gently so as to avoid magnets damaged by the sudden attracting. 

The embedded Neodymium magnets must be kept clean. Avoid grout covering the magnets so as to keep magnetic force.

After use, it should be kept clean and oiled so as to being protected from corrosion. 

The max operating or storage temperature must be below 80℃. Higher temperature may cause magnetic chamfer to reduce or totally lose magnetic force.

Although the magnetic force of magnetic steel triangle chamfer is much lower than shuttering magnet, it is still strong enough to create hazards to personnel through pinching on impact. Wearing gloves to protect one's hands is highly recommended. Please keep it far away from electronic instruments and unnecessary ferromagnetic metals. Special caution should be exercised if someone is wearing a pacemaker, because strong magnetic fields can damage the electronics inside pacemakers.

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