ᐅ Reinforcing KALLAX Shelves with Metal Strips – How to Install?
Created on: 19 Jan 2023 10:13
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petrnu
Hello everyone,
I am planning to reinforce my KALLAX shelves from the IKEA system with metal strips because I want to store somewhat heavier items on them and reduce the sagging of the original shelves. My specific question is: What is the best way to attach the metal strips so that they are securely fixed without causing damage to the shelves or the shelving unit?
I have considered drilling or screwing them in myself, but I am unsure whether this might negatively affect the material structure or if there are more elegant solutions. I am also interested in what type of metal strips work well (aluminum, steel, flat or L-profile) and whether I need washers or special screws.
Who has experience with this or can provide a step-by-step guide? Thanks in advance!
I am planning to reinforce my KALLAX shelves from the IKEA system with metal strips because I want to store somewhat heavier items on them and reduce the sagging of the original shelves. My specific question is: What is the best way to attach the metal strips so that they are securely fixed without causing damage to the shelves or the shelving unit?
I have considered drilling or screwing them in myself, but I am unsure whether this might negatively affect the material structure or if there are more elegant solutions. I am also interested in what type of metal strips work well (aluminum, steel, flat or L-profile) and whether I need washers or special screws.
Who has experience with this or can provide a step-by-step guide? Thanks in advance!
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edisondan19 Jan 2023 17:45Regarding the reinforcement requirements for KALLAX shelves: A continuous metal strip along the entire depth of the shelf significantly increases resistance compared to several individual sections. This is because it prevents a longer lever effect when weight is applied.
If you only want to use 2-3 strips, the load distribution is less uniform but can be sufficient if the heavy items are placed exactly where the reinforcements are located.
Concerning wood glue: Generally, bonding between metal and wood-based materials provides little additional strength unless you use specialized epoxy resins or construction adhesives that ensure a strong connection. Traditional wood glue is not effective here, as it adheres poorly to metal.
It is recommended to mechanically screw the strips in place to guarantee secure load transfer.
If you only want to use 2-3 strips, the load distribution is less uniform but can be sufficient if the heavy items are placed exactly where the reinforcements are located.
Concerning wood glue: Generally, bonding between metal and wood-based materials provides little additional strength unless you use specialized epoxy resins or construction adhesives that ensure a strong connection. Traditional wood glue is not effective here, as it adheres poorly to metal.
It is recommended to mechanically screw the strips in place to guarantee secure load transfer.
petrnu schrieb:
If I secure the strips with screws, would adding wood glue be helpful or just overkill?I see it differently. Instead of trying to reinforce half-heartedly with a metal strip, it’s better to consider investing in a proper shelving unit with sturdier shelves. Reinforcing with metal often feels like a patchwork solution and ends up being more frustrating than beneficial.
Installing the strips is usually fiddly, and screws can damage the surface if not evenly spaced. I view this approach as a crutch, not a real upgrade.
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PeoDaniel20 Jan 2023 09:51NOAHSAU schrieb:
I see it differently. Instead of half-heartedly reinforcing with a metal strip, it’s better to consider buying a proper shelving unit with stronger shelves.It depends on the purpose and the budget. Most of the time, reinforcing the existing KALLAX shelves is a very practical and cost-effective solution that works well. Not every solution has to be the highest quality or “perfect,” but rather a practical improvement of the existing system.
Regarding installation: I definitely recommend mechanical fastening with pre-drilling and possibly washers. When done properly, it holds well and significantly increases stability.
Additionally: When screwing the metal strips to the underside, it is advisable to use a spacer (a small piece of wood or plastic) to prevent pressure marks on the MDF and at the same time ensure optimal pressure distribution.
Careful tightening of the screws is also important – applying too much force can damage the material and reduce long-term stability.
If desired, a corrosion protection coating can also be applied to the strips when the shelves are installed in more humid rooms.
Careful tightening of the screws is also important – applying too much force can damage the material and reduce long-term stability.
If desired, a corrosion protection coating can also be applied to the strips when the shelves are installed in more humid rooms.
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flo-Theres21 Jan 2023 14:45The choice of profile is crucial: flat aluminum strips from 10mm (4 inches) wide are suitable for light reinforcement, while L-profiles are more stable and help to compensate for slight unevenness in the floor.
Be careful when installing to avoid damaging the MDF edge. Fine-thread screws hold better in MDF; pre-drilling with a carbide drill bit may be necessary.
Also important: screws should not be placed too close to the edge, as this can cause the material to chip easily.
Be careful when installing to avoid damaging the MDF edge. Fine-thread screws hold better in MDF; pre-drilling with a carbide drill bit may be necessary.
Also important: screws should not be placed too close to the edge, as this can cause the material to chip easily.
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