We are constantly trying to improve ourselves in new thoughts, new technology and new working methods.
Views: 0 Author: Site Editor Publish Time: 2025-07-07 Origin: Site
In recent years, magnet fishing has evolved from a niche hobby into a global trend, drawing outdoor enthusiasts, environmentalists, and treasure hunters alike. Central to this movement is the remarkable tool known as the double sided fishing magnet. Compact, deceptively simple, yet incredibly strong, these magnets are designed to retrieve ferromagnetic objects from rivers, lakes, and canals with surprising ease.
But what exactly gives these magnets their phenomenal pulling power? And why is the double-sided design increasingly preferred by seasoned magnet fishers? In this article, we dive into the mechanics, materials science, and engineering behind double sided fishing magnets—and explore why they’re not just tools, but feats of magnetic innovation.
A double sided fishing magnetis a specially engineered retrieval magnet that features two magnetic surfaces—typically positioned on the flat sides of a cylindrical or disk-shaped body. Each side has its own powerful neodymium magnet, giving the user more than one chance to attract submerged metallic items in a single drop.
Unlike single-sided magnets, which are strong only on one face and often require a direct hit to latch onto buried items, double sided variants increase the effective range and versatility. They are ideal for dragging along the bottom or for "drop-and-lift" retrievals when magnet fishing from a bridge or dock.
At the heart of every powerful fishing magnet lies neodymium, a rare earth element from the lanthanide series. In practical use, these magnets are made from an alloy of neodymium, iron, and boron (NdFeB), creating what’s known as a permanent magnet. This material is capable of maintaining strong magnetic fields without the need for electrical input.
Why neodymium? Simply put, it has the highest magnetic energy product (BHmax) among all permanent magnet materials. This value represents the maximum amount of magnetic energy the magnet can store. High BHmax means smaller magnets can still generate powerful fields—perfect for fishing applications.
To give perspective, a neodymium magnet of just a few centimeters can produce pulling forces of several hundred kilograms, depending on its grade, size, and shape.
Neodymium magnets are classified into grades like N35, N42, N52, and so on. These refer to the magnet’s maximum energy product. The higher the number, the stronger the magnet—up to a point.
For fishing magnets, especially double sided ones, higher grades (e.g., N45–N52) are commonly used to maximize pulling force. However, it’s not just about the grade. Pulling strength is also influenced by:
Surface area of the magnetic face
Distance between the magnet and the target object
Thickness and quality of the steel casing
Alignment of the magnetic poles
Double sided fishing magnets, with two powerful faces, can generate combined pulling forces ranging from 500 to over 2,000 pounds depending on their specifications.
A key feature of double sided magnets is their wider field coverage. With magnetic poles on both faces, the field lines extend in a broader area compared to single-sided magnets, which direct most of their magnetic energy in one direction.
This dual polarity design enhances efficiency in practical fishing scenarios. For example:
When dragging along muddy riverbeds, either side can latch onto hidden objects.
When dropped vertically, users don’t need to worry as much about the “right side” hitting the target.
The magnet can also sandwich a metal object between both sides, offering a more secure grip.
In essence, double sided magnets offer a 360-degree opportunity to catch metal—without increasing the overall bulk significantly.
While neodymium is the source of magnetic strength, its raw form is brittle and prone to corrosion. That’s why fishing magnets are housed in protective steel casings.
These casings serve several purposes:
They shield the magnet from physical damage upon impact with rocks or debris.
They help concentrate the magnetic field toward the exposed faces by using ferromagnetic materials that redirect magnetic flux.
They allow the integration of mounting hardware like threaded eye bolts—used to tie ropes or carabiners securely.
Double sided magnets typically come with dual eye bolt positions: one on top (for vertical drops) and one on the side (for dragging), allowing users to switch depending on their method.
One of the most misunderstood aspects of fishing magnets is their pulling force rating. A magnet might advertise “1000 lbs of pulling power,” but real-world performance rarely reflects this maximum value.
The quoted pulling force is measured under ideal laboratory conditions:
Flat, clean 1" thick steel plate
Direct contact (no gap, rust, or debris)
Perpendicular force without shear
In real-world magnet fishing, actual pulling force will vary significantly due to:
Dirty, corroded, or curved surfaces
Angle of pull (vertical vs. horizontal)
Underwater drag and sediment interference
That said, double sided magnets still outperform their single-sided counterparts when it comes to versatility and hit rate—even if raw strength is slightly divided between two faces.
While designed for recreational magnet fishing, double sided fishing magnets have found utility in several other areas:
Salvage operations: Recovering tools, chains, or scrap from industrial waters
Environmental clean-up: Removing metal litter from lakes and urban canals
Underwater inspection: Searching for missing parts in docks or marinas
Construction sites: Retrieving dropped metal tools or screws from hard-to-access areas
This flexibility has made them a go-to tool for hobbyists and professionals alike.
Given their strength, handling double sided fishing magnets requires care:
Keep them away from credit cards, electronics, and pacemakers.
Avoid finger pinching—magnets can snap together violently if stored improperly.
Use gloves when fishing to prevent rope burn or injuries from sharp retrieved objects.
Always inspect your rope and eye bolts for wear to prevent accidental loss.
Proper storage and transport—such as with padded cases or keepers—can prevent accidental damage or injury.
With a wide range of options on the market, choosing the right double sided magnet depends on:
Your target items: For coins and small relics, a lighter magnet may suffice; for tools, bikes, or heavy scrap, a stronger one is essential.
Water conditions: Deep or fast-moving waters may require heavier magnets and stronger ropes.
Experience level: Beginners may prefer lighter models for safety and ease of use.
Also consider optional coatings like nickel-copper-nickel plating, which improves corrosion resistance in freshwater or brackish environments.
Double sided fishing magnets represent a perfect blend of science and simplicity. Built on the principles of rare-earth magnetism, magnetic field geometry, and durable design, they offer unmatched performance in outdoor retrieval tasks.
What makes them especially fascinating is their dual nature—not just in structure, but in appeal. They attract both metal and curiosity, drawing users into the physics of force, the mechanics of materials, and the thrill of discovery.
Whether you’re pulling up rusty treasure, cleaning waterways, or just enjoying a peaceful weekend by the river, a double sided fishing magnet is a surprisingly sophisticated tool that delivers results.
Want to Learn More About High-Performance Fishing Magnets?
If you're interested in diving deeper into the world of fishing magnets—or looking for reliable, durable double sided fishing magnets for your next adventure—consider exploring the options offered by Ningbo Shine Magnetic Technology Co., Ltd.. With extensive experience in rare earth magnet manufacturing and product customization, they are a trusted name in the industry. You can contact their team directly for product specifications, OEM services, or bulk inquiries.
