ᐅ KALLAX screws go in crooked during assembly – any solutions?

Created on: 4 Sep 2024 08:12
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Donamau
D
Donamau
4 Sep 2024 08:12
Hello everyone,

I’m currently facing a frustrating issue while assembling my new IKEA KALLAX shelf unit. The supplied screws tend to twist crookedly when being screwed in, making the assembly difficult and sometimes causing the wood to split. This is probably not just due to how I’m handling them; I’ve had this problem with several screws not going straight into the pre-drilled holes, but rather getting stuck at an angle.

Has anyone experienced this or have any tips on how to prevent it? Is there perhaps a method to assemble the shelf straight and stable, without the screws twisting crookedly and damaging the material?

I’d appreciate it if you could share your strategies, tools, or techniques that have helped with assembling the KALLAX. Thanks in advance!
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Dilen
4 Sep 2024 08:45
Hello Donamau,

Your issue with crooked screws in the KALLAX unit is something I am quite familiar with from my own experience, and it often relates to the alignment and preparation of the screw holes. Here are a few steps I always follow to help ensure everything fits as straight as possible:

1. Pre-drilling: Even though IKEA provides pre-drilled holes, use a thin drill bit to slightly clear the path for the screw. This helps to drive the screw in straight.

2. Insert screws at a right angle: It is very important to position the screw exactly perpendicular to the panel. Otherwise, it can start to tilt and go in crooked.

3. Drive screws in slowly: Do not use full force when screwing; apply light torque and adjust frequently as you go.

4. Use aids: A small clamp or a right-angle bracket can help keep the panel stable and straight while you drive the screws.

5. Screwdriver with torque control: If available, this protects the material and prevents over-tightening.

I would be interested to know whether your screws tend to go crooked more often in the solid parts or in the thinner panels? Also, what tools are you using? Manual or cordless screwdriver?

If you like, I can also share some tips on proper screwing technique and the use of lubricants to make screwing easier.
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Paunon
4 Sep 2024 09:21
Always start by screwing in by hand until it fits properly, then use the cordless drill.
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Nabla64
4 Sep 2024 09:58
Regarding crooked screws during KALLAX assembly, I have put together a brief procedure:

1. Check the holes for debris or shavings that could make inserting the screw difficult.
2. Always insert the screw exactly perpendicular to the wood.
3. Start by turning with a manual screwdriver to ensure a straight entry.
4. Then proceed slowly with a cordless drill set to low torque.

If you don’t hit the “perpendicular” angle exactly at step 2,
Dilen schrieb:
Schrauben gerade ansetzen: Sehr wichtig ist, die Schraube exakt im rechten Winkel zum Brett anzusetzen
, the screw will easily tilt. Using a simple right angle tool or even a flat wall as a reference can help.

Some people also tend to screw in too fast and crookedly because the material gives way under high speed.
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nolan
4 Sep 2024 10:03
If the screws go in crooked, lightly deburr the holes or use a thin drill bit to create a small pilot hole.
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Donamau
4 Sep 2024 12:26
Thanks for the initial tips.

@Dilen: You’re right, I mostly used a cordless drill, maybe I was a bit too fast. The screws tend to go in at a slight angle, especially in the thinner MDF panels, which quickly causes visible pressure marks.

@Nabla64: I like that you clearly broke down the steps again. I haven’t used a square yet, but I’ll try that on my next attempt.

One more question for everyone: Would you recommend applying some oil or grease to the screws before driving them in? I’ve heard this can help with solid wood, but does it make sense for KALLAX MDF? If so, how much should be used to avoid swelling or damaging the material?