Hello everyone, I have a question about the durability of Malm screws with frequent use. I have noticed that this type of screw often becomes loose over time, especially with regular stress, for example in furniture or assemblies. I am interested in why this happens, even though the screws should normally hold firmly. Is it due to material fatigue, the thread design, environmental factors, or perhaps the way the screws are installed in Malm furniture? Are there technical or physical explanations for why Malm screws tend to loosen with frequent use? I look forward to your detailed assessments and explanations!
Hello sin10, your question is very interesting and quite valid. The phenomenon of Malm screws loosening with frequent use can have several causes. First of all, Malm furniture is usually equipped with so-called cam locks or cam connectors, which at first glance may seem less sturdy than traditional metal fasteners.
A key factor is mechanical stress and vibrations. With constant movement, a so-called "self-loosening effect" occurs. This means the friction is not sufficient to keep the thread securely in place, and the screw gradually starts to turn and loosen.
Well spotted! On the one hand, material fatigue plays a role since plastic or lower-quality steel is often used. On the other hand, less than perfect alignment when screwing in can also reduce the holding strength. Thermal expansion or moisture can also affect the fastening material.
I recommend always tightening the screws again after the first use with furniture like Malm to counteract this. Additionally, there are special locking compounds that can help prevent loosening.
A key factor is mechanical stress and vibrations. With constant movement, a so-called "self-loosening effect" occurs. This means the friction is not sufficient to keep the thread securely in place, and the screw gradually starts to turn and loosen.
sin10 schrieb:
Is this due to material fatigue, the thread design, environmental influences, or perhaps the way the screws are installed in Malm furniture?
Well spotted! On the one hand, material fatigue plays a role since plastic or lower-quality steel is often used. On the other hand, less than perfect alignment when screwing in can also reduce the holding strength. Thermal expansion or moisture can also affect the fastening material.
I recommend always tightening the screws again after the first use with furniture like Malm to counteract this. Additionally, there are special locking compounds that can help prevent loosening.
Hey, it’s great that you bring this up! 🙂 In my case, the Malm screws also loosened after a short time, even though I thought I had tightened everything properly!
I believe what happens is a kind of “thread stress” caused by movement – every time you, for example, pull the drawer, there are tiny vibrations. This causes the screws to gradually loosen.
I’ve gotten into the habit of always using small thread lockers or at least a light adhesive on the screws. That really helps and prevents having to constantly retighten things! Definitely a useful tip if you want to secure your furniture properly 🙂
I believe what happens is a kind of “thread stress” caused by movement – every time you, for example, pull the drawer, there are tiny vibrations. This causes the screws to gradually loosen.
I’ve gotten into the habit of always using small thread lockers or at least a light adhesive on the screws. That really helps and prevents having to constantly retighten things! Definitely a useful tip if you want to secure your furniture properly 🙂
Regarding cam screws and their loosening in furniture construction, there are actually a few technical details worth understanding:
1. Material and thread design: Cam screws are usually part of fastening or connection systems made from wood-based materials and plastics, which affects their grip. The thread often has less “bite” compared to traditional metal threads.
2. Dynamic loads: Repeated stresses—such as pulling a drawer out—create forces that work against the screw’s hold and can cause loosening.
3. Vibration and loosening effects: As mentioned, there is a self-loosening mechanism that is particularly noticeable with softer materials.
4. Installation quality: If the screws are not inserted perfectly perpendicular or if the pilot hole is too large, the necessary counter-pressure is missing.
Exactly, that is often the main reason! My advice is to regularly check the connections for tightness, especially with frequent use.
1. Material and thread design: Cam screws are usually part of fastening or connection systems made from wood-based materials and plastics, which affects their grip. The thread often has less “bite” compared to traditional metal threads.
2. Dynamic loads: Repeated stresses—such as pulling a drawer out—create forces that work against the screw’s hold and can cause loosening.
3. Vibration and loosening effects: As mentioned, there is a self-loosening mechanism that is particularly noticeable with softer materials.
4. Installation quality: If the screws are not inserted perfectly perpendicular or if the pilot hole is too large, the necessary counter-pressure is missing.
giabau schrieb:
Friction is not enough to keep the thread securely in position over time
Exactly, that is often the main reason! My advice is to regularly check the connections for tightness, especially with frequent use.
Hey everyone, this topic is really interesting! Here’s how I see it: With Malm furniture, which is often quite simply constructed, small movements naturally cause the screws to loosen over time.
I mean, who doesn’t constantly open and close a drawer? 😉 After a few months at the latest, even the coolest screw will easily end up in your hand.
What works best for me is tightening the screws firmly during assembly and then checking them again after about a week – this really stabilizes everything. It also saves you from having to do annoying retightening while using the furniture!
I mean, who doesn’t constantly open and close a drawer? 😉 After a few months at the latest, even the coolest screw will easily end up in your hand.
What works best for me is tightening the screws firmly during assembly and then checking them again after about a week – this really stabilizes everything. It also saves you from having to do annoying retightening while using the furniture!
From a technical perspective, the loosening of Malm screws with frequent use is primarily caused by micro-movements within the joint, triggered by load cycles.
The screws are typically anchored in wood-based materials, which are significantly more elastic compared to metal. Due to this elasticity and repeated loading, small forces develop that cause the thread to loosen.
Another factor is the lack of preload in the screw connection, which can be improved by using an appropriate spring washer or screw locking device.
Conclusion: The loosening is a physical consequence of loading and material behavior, which can be minimized through preventive measures.
The screws are typically anchored in wood-based materials, which are significantly more elastic compared to metal. Due to this elasticity and repeated loading, small forces develop that cause the thread to loosen.
Another factor is the lack of preload in the screw connection, which can be improved by using an appropriate spring washer or screw locking device.
Conclusion: The loosening is a physical consequence of loading and material behavior, which can be minimized through preventive measures.
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