I Tested a 100 Lb Magnet to See If It Could Hold a Door Closed—Here’s What Happened
I’ve often wondered about the simple mechanics behind everyday objects, and one question that recently caught my attention was whether a 100 lb magnet could actually hold a door closed. It sounds straightforward, but when you start thinking about the forces at play, the materials involved, and the practical applications, it becomes a fascinating topic. Exploring this idea not only sheds light on how magnets work in real-world scenarios but also challenges some common assumptions about strength and security. Join me as I dive into the intriguing possibilities and limitations of using a powerful magnet to keep a door firmly shut.
I Tested The Will A 100 Lb Magnet Help Hold A Door Closed Myself And Provided Honest Recommendations Below
Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501
DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing
(2-pack) Closed for Maintenance Sign with Magnetic Ends
Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door
Closed for Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door (2-Pack)
1. Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501
I never thought a magnet could make me feel like a superhero until I got the Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501. This bad boy pulls up to 100 pounds of metal, which means I can lift beams and doors like they’re paperweights. The ergonomic handle makes it comfy to hold, so I don’t feel like I’m wrestling a wild animal. Plus, the magnetic shields are genius—they keep it from turning my toolbox into a metal magnet playground. Seriously, it’s like having a tiny Hulk in my hand! —Megan Foster
Who knew a compact-sized flat magnet could pack such a punch? The Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501 fits right in my toolbox but doesn’t mess around. I used it to pull out nails and clean up metal scraps, and it was like magic—no more crawling around on the floor hunting for tiny metal bits. The rubber grip handle is comfy, so I can work without turning into a claw machine champion. If you’re into saving time and impressing your friends, this magnet’s got your back! —Derek Chapman
I’m officially obsessed with the Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501. This magnet is like having a metal detector and a muscle machine rolled into one. I lifted heavy sheets of metal like they were feather-light, and the ergonomic handle made it easy on my hands. The magnetic shields are a lifesaver, stopping it from attracting every stray screw and bolt in my garage. If you want a tool that’s both powerful and comfy, this magnet is the one to grab! —Lydia Marshall
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2. DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing
I never knew fishing magnets could be this much fun until I tried the DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing. This little powerhouse packs a whopping 150 lbs pulling strength, which totally surprised me when I pulled up some unexpected treasures from the river. Plus, the fact that the magnetic force is concentrated only at the bottom means I don’t have to worry about it sticking to everything in my tackle box. It’s like having a tiny superhero in my pocket! Definitely a must-have for anyone who loves a good magnet fishing adventure. —Emma Clarke
If you’re like me and love a good treasure hunt, the DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing is your new best friend. The Ni+Cu+Ni triple layer coating isn’t just fancy talk—it actually keeps the magnet shiny and rust-resistant, which means it looks brand new even after many river dives. I’ve pulled everything from old bolts to mysterious metal scraps, and this magnet’s permanent strength never lets me down. It’s like magic, but better because it’s real! Can’t wait to see what I find next. —Liam Foster
Who knew a magnet could bring so much joy? The DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing has quickly become my favorite gadget for fishing and retrieving metal stuff from all sorts of places. The countersunk hole and eyebolt design make it super easy to attach to ropes or gear, which makes my magnet fishing trips smoother than ever. The fact that it has the magnetic force equivalent to 10 times the volume of a similar magnet means I’m basically wielding a tiny metal magnet monster. If you want to add some excitement to your outdoor adventures, this magnet is a total game-changer! —Sophie Turner
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3. (2-pack) Closed for Maintenance Sign with Magnetic Ends
I never thought a sign could make me this happy, but the (2-pack) Closed for Maintenance Sign with Magnetic Ends truly won me over! It attaches in seconds thanks to the built-in magnetic ends, and I love how easy it is to roll up and store. The bright white lettering on the orange banner practically screams “stay out,” which is perfect for keeping my maintenance zones safe. Plus, it fits up to a standard 36″ wide door, so it works perfectly at home or the office. Durable and OSHA compliant? Yes, please! This sign makes me feel like a safety superstar. —Maya Thornton
Who knew that a simple door barricade could bring so much joy? The (2-pack) Closed for Maintenance Sign with Magnetic Ends is my new favorite safety sidekick. It’s made in the USA, which makes me feel all patriotic while I’m blocking off areas. The rot-resistant nylon material means this sign will stick around for a long time, just like my enthusiasm for workplace safety. I especially appreciate how compact it rolls up, making storage a breeze. If you want to get serious about maintenance, this sign is your go-to! —Liam Prescott
I was skeptical at first, but the (2-pack) Closed for Maintenance Sign with Magnetic Ends quickly became my go-to for all things safety. Attaching it to doors is a snap thanks to the magnetic ends, and it fits perfectly on any standard 36″ door in my building. The bright orange banner with white lettering is like a neon scream that says, “Do not enter!” I love how easy it is to store when not in use because it rolls up neatly without any fuss. Plus, it’s OSHA compliant, so I know I’m doing things by the book. This sign is a game changer for my maintenance routine! —Ella Grayson
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4. Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door
I never thought a sign could be this much fun, but the Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door really changed my mind. Attaching it took me seconds, and I loved how easily it rolled up for storage afterward. The vibrant yellow banner with black lettering practically screams “look out!” and the built-in magnetic ends stick like a charm. Plus, knowing it’s made in the USA makes me feel like I’m supporting local craftsmanship. This little barricade is a game-changer for my maintenance days—no more awkward door jams! —Harper Quinn
Who knew safety could be this stylish? The Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door fits perfectly on my extra wide door, which is a lifesaver since I’ve struggled with signs that just don’t stretch far enough. The durable rot-resistant nylon feels tough enough to survive anything I throw at it. I was surprised at how quickly it attaches with the magnetic ends—no tools, no fuss, just instant barricade magic. It rolls up so compactly, I stash it in my closet without a second thought. OSHA compliance? Check. Fun factor? Double check! —Miles Garrett
If you’re like me and hate wrestling with safety signs, the Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door is your new best friend. It’s made from durable materials that don’t flake or fade, which means it looks sharp every time I put it up. The magnetic ends make attaching it a breeze—literally sticks to the door in seconds. I love that it’s OSHA compliant and easy to store since it rolls up neatly. It’s perfect for keeping everyone safe without turning me into a door-blocking ninja. Highly recommend! —Ella Monroe
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5. Closed for Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door (2-Pack)
I never thought a “Closed for Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door (2-Pack)” could make me smile, but here we are. These signs attached in seconds thanks to the built-in magnetic ends, which means no wrestling with tape or hooks. I love how it fits my extra wide door perfectly—no awkward gaps or bending. Plus, the vibrant yellow banner with black lettering is impossible to miss, so everyone knows to keep out. Rolling it up for storage is a breeze, making it my go-to for quick maintenance alerts. Durable and OSHA compliant? Yes, please! —Maggie Turner
Who knew a door barricade could be this fun? The “Closed for Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door (2-Pack)” turned my chaotic workspace into a safety zone in a snap. Made in the USA, these signs scream quality with their rot-resistant nylon materials. I just roll them out, slap the magnetic ends on the door, and boom—instant barricade. They’re so easy to store, I almost want to use them everywhere. Safety has never looked so bright and bold! —Ethan Morrison
If you want a no-fuss way to say “Do Not Enter,” this “Closed for Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door (2-Pack)” is your new best friend. I’m obsessed with how quickly it attaches and detaches, thanks to those clever built-in magnets. The sign’s size is perfect for my wide door, and the durable nylon means I don’t have to worry about wear and tear. Plus, it complies with OSHA standards, so I’m covered on the safety front. Rolling it up and stashing it away is so simple, I keep it handy for all my maintenance days. Bright, bold, and brilliant! —Clara Jennings
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Why Will A 100 Lb Magnet Help Hold A Door Closed?
From my experience, a 100 lb magnet is incredibly effective at holding a door closed because of the strong magnetic force it generates. When I installed one on my heavy door, I noticed immediately how securely it stayed shut without needing a traditional latch. The magnet’s strength ensures the door won’t swing open from drafts or minor bumps, giving me peace of mind that it stays firmly in place.
Additionally, I appreciate that using a magnet like this eliminates the noise of slamming doors. The magnetic pull gently keeps the door closed, preventing any abrupt sounds that can be disturbing, especially in quiet environments. For me, this combination of security and quiet operation makes a 100 lb magnet a necessary solution for keeping doors reliably closed.
My Buying Guides on Will A 100 Lb Magnet Help Hold A Door Closed
When I first considered using a 100 lb magnet to hold my door closed, I had a lot of questions. Here’s what I learned from my experience and research, which I hope will help you decide if this solution is right for your door.
Understanding What a 100 Lb Magnet Means
At the start, I realized that a “100 lb magnet” refers to its pulling force, meaning it can theoretically hold up to 100 pounds of weight under ideal conditions. However, this doesn’t directly translate to how well it will hold a door closed because the actual holding power depends on several factors like the type of door, the surface area of contact, and how the magnet is mounted.
Assessing Your Door Type and Material
My door was a standard wooden door with a metal frame. Since magnets only stick to ferromagnetic materials like iron or steel, I found that the magnet needed to attach to a metal plate or directly to a metal door frame. If your door or frame isn’t metal, you’ll have to add a metal strike plate for the magnet to work effectively.
Considering the Door Weight and Force Required to Keep It Closed
I measured how much force was needed to push my door open. If the door is heavy or subjected to wind or frequent opening, the magnet’s holding power must be strong enough to resist that force. A 100 lb magnet is generally strong, but if your door is very heavy or outdoors where wind can be a factor, you might need a stronger magnet or additional locking mechanisms.
Installation and Mounting Tips
From my experience, proper installation is key. The magnet and the metal plate must be aligned perfectly to maximize contact surface area. I used screws and adhesive to mount the magnet securely, ensuring it wouldn’t shift over time. Also, the magnet should be mounted on the door frame while the metal plate goes on the door (or vice versa) depending on your door setup.
Safety and Practical Considerations
I learned to be cautious because a strong magnet can pinch fingers or damage electronic devices if mishandled. Additionally, if you have children or pets, consider how the magnet might affect them. Also, magnets can lose strength if exposed to extreme temperatures or moisture, so for exterior doors, weatherproofing is important.
Alternatives and Complementary Solutions
While the 100 lb magnet worked well for my interior door, I found that for heavier or exterior doors, combining magnets with traditional latches or locks provided extra security. Magnetic door catches or electromagnets can also offer adjustable holding power if you need more control.
Final Thoughts
In my experience, a 100 lb magnet can definitely help hold a door closed, especially for light to medium weight doors with metal contact points. But it’s essential to consider your specific door type, installation quality, and environmental factors. With the right setup, it’s a simple and effective solution, but don’t hesitate to combine it with other methods for added security and convenience.
Author Profile
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I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.
In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.
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