ᐅ What should I do if parts of the Ikea Brimnes furniture do not fit together?

Hello everyone,

I started assembling my Ikea Brimnes wardrobe, but I’m already facing problems at the beginning of the process: some parts don’t fit together properly, especially the side panels and the back panels, which seem either too short or have misaligned drill holes. I’ve checked several times to make sure I assigned the parts correctly and followed the instructions, but something isn’t right.

My question is: what can I do if Ikea Brimnes parts obviously don’t fit together? Are there known manufacturing tolerances with Ikea products that you just have to accept, or is this more likely a production defect? Should I order replacement parts, or can I use some basic DIY skills to adjust the pieces so they still stand stable?

I would appreciate any advice on how to proceed before I give up on the entire assembly or contact customer service. Thanks in advance!

theopu schrieb:
What can I do if Ikea Brimnes parts obviously don’t fit together?

Hey theopu!

Almost everyone who has assembled Ikea furniture has experienced this – those small fitting issues are kind of the hidden fun factor 😉. With Brimnes, it can sometimes happen that the drill holes are slightly misaligned or parts differ a little from what the instructions show. My advice:

- Use some fine sandpaper or a file if, for example, wooden parts feel tight
- If screws don’t go in fully, don’t force them; instead, double-check the holes and the type of screw
- Check the part markings again (they are often small and easy to miss!)

If in doubt, Ikea customer service is usually quite reachable and can send replacement parts. But yes, often a bit of patience, persistence, and some fine adjustment is enough – that’s almost normal with Brimnes.

Good luck and hang in there!

theopu schrieb:
Are there known tolerances with Ikea products that you have to accept, or is this more likely a manufacturing defect?

Hello theopu,

that is a very valid and well-phrased question. Ikea produces furniture through mass production, and not all parts will fit perfectly by machine—there are always certain manufacturing tolerances, which are usually compensated for by the design. In the case of Brimnes, parts like the back panels are often made of thin particleboard—they are flexible, but they should not be warped to the point of being unusable.

Before giving up, I recommend:
- Check your assembly surface. An uneven floor can make parts harder to fit together.
- Follow the assembly sequence carefully. Sometimes one side needs to be fully secured before the next part will fit properly.
- Inspect for any transport damage that might affect the fit.

If it really is a manufacturing defect, Ikea’s furniture support is your friend. Replacement parts are usually supplied quickly and without much hassle.

If you are confident with DIY skills, some issues can be resolved with minor adjustments. However, it is important not to compromise stability.

Good luck moving forward!

First of all, thanks for the suggestions. I can go into more technical details, as I have already assembled and optimized several Brimnes cabinets myself.

theopu schrieb:
I have double-checked whether I assigned the parts correctly and also followed the manual, but something here is not right.

If parts don’t fit together, I recommend a systematic check:

- First, compare the part numbers or labels. Sometimes there are visually identical parts that are not interchangeable.
- Measure the critical dimensions, especially on the side and back panels. Brimnes usually uses a tongue-and-groove connection; if a groove is too narrow, installation becomes impossible.
- Pay attention to the connection method: some versions have certain panels pre-drilled for small metal dowels (cam locks). If the holes are offset here, it will cause assembly problems.

If you find a discrepancy here, I suggest consulting the Ikea assembly video, which often shows more than the paper manual.

In an emergency, you can improve small fits with fine sandpaper or even a chisel, but be careful and work gradually. Removing too much material weakens the structure.

Have you checked whether the misplaced part might belong to a different product variant? Sometimes, despite proper packaging, incorrect kits are shipped. A detailed list of your affected parts with their labels would make diagnosis easier.

Feel free to get back to me with more details!