Wiktor Wise
Electric strikes are an essential part of electronic access control systems, allowing residents to use PIN codes or fobs to open doors. While traditional strikes use larger keepers positioned on a doorframe, no-cut electric strikes contain the strike locking mechanism inside the doorframe, avoiding the need to cut into the doorframe during installation. To cut in an electric strike, various tools can be used, including the Dremel tool, angle grinders, power files, and oscillating tools. The choice of tool depends on factors such as the material of the doorframe and the precision required.
Characteristics and Values of Electric Strikes
| Characteristics | Values |
|---|---|
| Installation | Quick and simple |
| Mounting | Only on the frame |
| Tools | Angle grinder, power file, head torch, Dremel tool, oscillating tool, jig saw |
| Power Requirement | AC or DC voltage, dual voltage of 12 or 24 VDC/VAC |
| Types | Fail-secure, fail-safe, no-cut, maglock |
| Function | Releases the latch, unlocking the door |
| Locking | Locked from the outside at all times, unless a fail-safe strike is used |
| Unlocking | Pressing a panic bar or other manual release device |
| Use Cases | Mortise locks, cylindrical locks, deadbolts, push bar, panic bar, exit device |
| Compatibility | All types of buildings |
| Safety | Fail-secure strikes are safer in the event of a power outage |
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What You'll Learn
No-cut electric strikes
However, it's important to consider some potential drawbacks. No-cut electric strikes are more mechanically complex than traditional strikes, which may make them more prone to failure. They also require proper installation, ensuring that the locking mechanism is securely bolted or snapped into the doorframe.
When choosing a no-cut electric strike, there are several options available. The Trine 4100DBDL electric strike is made of stainless steel and features two independently activated latches, making it suitable for both left- and right-handed doors. Another option is the SECO-LARM no-cut door strike, which offers a field-selectable fail-safe or fail-secure option and a reversible design compatible with left- and right-handed doors. The HES 8000 series electric strike is also worth considering for its concealed design, making it ideal for cylindrical locksets, and its dual voltage capability.
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Fail-secure electric strikes
However, installing fail-secure electric strikes can be challenging, especially if you are retrofitting them into existing frames. One of the biggest challenges is getting the necessary wires to the lock to power it. The type of door frame can also affect the installation process, with aluminium storefronts and metal (steel) frames presenting some of the most significant installation challenges.
When installing fail-secure electric strikes, it is important to use the right tools to make the job easier. Some recommended tools for cutting in electric strikes include the Dremel tool, angle grinders, power files, and head torches. The Dremel tool, in particular, is favoured for its strength and resistance to water. However, it can be challenging to use on certain types of metal frames where the wheel may not reach deep enough.
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Fail-safe electric strikes
In the context of electric strikes, the term "fail-safe" refers to the behaviour of the locking mechanism during a power failure or disruption. In a fail-safe system, the door is unlocked when power is removed and locked when power is applied. This is particularly important for stairwell doors, as it ensures that occupants can quickly exit the building in an emergency. During a fire alarm or power outage, the electric strike disengages, allowing the door to be opened without the need for a key or access code.
The SECO-LARM no-cut door strike is an example of a fail-safe electric strike. It offers a field-selectable fail-safe or fail-secure option, giving users the flexibility to choose the desired mode of operation. This strike is designed to fit both left- and right-handed doors and has an impressive operating temperature of up to 120 degrees Fahrenheit, making it suitable for hot climates.
Another example of a fail-safe electric strike is the HES 8000 series electric strike, which has a concealed design that is well-suited for cylindrical locksets. It has a substantial static strength of 1,500 lbs and a dynamic strength of 70 lbs, ensuring the door remains secure. Additionally, the HES 8000 series offers a dual voltage of 12 or 24 VDC/VAC, providing installation options depending on the power supply available.
When considering the installation of fail-safe electric strikes, it is important to ensure compatibility with the power supply. The electric strike system must be connected to the correct AC or DC voltage and current rating that matches the power supply. This ensures the proper functioning of the electric strike and helps to avoid potential issues.
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Tools for cutting metal frames
Cutting metal frames can be a challenging task and requires the right tools. Here are some tools that can be used for cutting metal frames:
Dremel Tool
The Dremel tool is a versatile and powerful option for cutting metal frames. It is known for its strength and ability to cut through stainless steel with ease. The Dremel has been a favourite among professionals for decades and is now also popular with DIY enthusiasts. While it can be cumbersome to use on certain metal frames where the wheel doesn't reach deep enough, it produces a high-quality finish. The Dremel EZ lock version allows for easy wheel changes and improved safety with reinforced fibres that reduce brittleness and shatter resistance.
Angle Grinder
An angle grinder is a powerful tool that can be used to cut through various materials, including metal. It is a preferred tool for locksmiths working with metal frames, as it can quickly cut through aluminium or hollow steel frames.
Electric Shears
Electric shears are designed for cutting sheet metal and can handle steel studs up to 68-mil thickness. They are portable and leave a smooth edge, making them a convenient option for metal framers.
Chop Saws
Chop saws are essential for metal framing as they can cut through longer metal studs, typically 8 to 24 feet in length. The rotating blade can be adjusted to the required height to make precise cuts.
Straight-Cutting Snips
Straight-cutting, hand-tool snips are another option for cutting metal frames. They can cut flanges and trim studs and are available in different varieties, including left and right-cutting versions and those designed for 18-gauge stainless steel.
Plasma Cutting Systems
Plasma cutting systems offer a versatile solution for metal framing. They can cut galvanized steel channels and corrugated steel panels and are useful for creating holes and openings for vents, skylights, and conduit installations. These systems require a power source and an air compressor to operate.
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Tools for cutting wood frames
When it comes to cutting wood frames, precision is of utmost importance. The right tools can make all the difference in achieving accurate and clean cuts. Here are some essential tools for cutting wood frames:
Measuring and Marking Tools:
A good tape measure is essential for any woodworking project. Look for one with a durable, easy-to-read blade and a reliable locking mechanism. Antique framing squares are also useful for layout work and can even help calculate roof angles.
Cutting Tools:
- A circular saw is a versatile power tool that can make straight cuts, bevel cuts, and crosscuts with the right guide. Look for one with adjustable depth and bevel settings.
- For precise crosscuts and miter cuts, a miter saw is a must-have. It allows for quick and accurate angled cuts, making it ideal for framing and trim work.
- A table saw provides a stable and precise cutting platform for rip cuts, crosscuts, and bevel cuts.
- A hand saw is perfect for smaller projects, precision cuts, and situations where portability is important. Choose one with fine teeth for smooth cuts and a comfortable grip.
- For timber framing, a froe is used to split blocks of wood into rough sizes for peg-making.
- Japanese-style pull-stroke saws are preferred by some woodworkers for their precision and versatility, with the Ryoba saw offering two blades in one.
- Power tools like die grinders and angle grinders can be used for cutting and sanding, but they may require attachments.
- Dremel tools are popular for cutting strikes, offering precision and strength, but they can be challenging to use on certain metal frames.
Safety Gear:
- Safety glasses are crucial to protect your eyes from flying debris.
- Ear protection is important to reduce noise exposure.
- A dust mask is essential to prevent the inhalation of sawdust.
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Frequently asked questions
An electric strike is a part of an electronic access control system that empowers residents to use anything from PIN codes to fobs to open doors. It replaces a standard door strike and is connected to a power supply. When activated, it releases the latch, unlocking the door.
A no-cut electric strike is a type of electric strike that contains the strike locking mechanism inside the doorframe. No-cut strikes are more aesthetically pleasing and reduce the risk of someone entering a secured room by tampering with the keeper. However, they are more mechanically complex and may be prone to failure.
Some commonly used tools for cutting in electric strikes include the Dremel tool, angle grinder, power file, head torch, oscillating tool, and jig saw.
