ᐅ Kallax Doors Hard to Open After Painting – What Can Help?

Viktorin34 schrieb:
Is fine steel wool suitable for this, or is it better to avoid metal?

Metal abrasive materials like steel wool are not suitable for hinges because they can scratch the surface and potentially promote corrosion. It is better to use non-metallic fine sandpaper (around 400-600 grit) or special plastic abrasive pads.

Viktorin34 schrieb:
Is dry lubricant a standard recommendation?

Yes, dry lubricants are commonly used in the plastics and furniture industries because they are non-sticky and do not attract dust particles. Especially for plastic hinges, oil can otherwise cause contamination.

In addition to the previous answers, I would like to explain the process of painting Kallax doors in more detail to clearly understand the causes:

When painting, the surface volume changes slightly, especially with multiple coats. A common misconception is that paint stays perfectly smooth, but even with thin layers, the paint can swell at edges.

This is particularly noticeable at the cutouts for hinges. If these areas are not masked or left free, paint settles into minimal gaps and improves adhesion where movement is necessary.

The plastic core of the doors can slightly swell if water-based paint is used and paint penetrates, which worsens the fit.

My recommendation:

- Remove the doors completely before painting.
- Remove hinges or at least cover them carefully.
- Lightly sand edges and adjoining surfaces and use a primer.
- Apply thin, multiple coats.
- After drying, mechanically smooth the contact areas selectively (e.g., with a very fine sanding sponge).

Question for Viktorin34: Which type of paint did you use, and how many coats were applied? Was the paint water-based or solvent-based?

Palenar schrieb:
Question: Which paint did you use, and how many coats did you apply?

I used a water-based acrylic paint, specially designed for furniture, and applied a total of three coats. I let each coat dry for about 3 hours, but the room was relatively cool (around 18°C (64°F)).

Palenar schrieb:
Remove doors completely and take off hinges

I removed the doors, but the hinges are fixed because I used the original Kallax soft-close hinges, which are not easy to detach.

That probably explains why the hinges got some paint on them during painting and are now stiff to operate.

Viktorin34 schrieb:
Soft-close hinges, not easily removable

This is important information. Soft-close hinges are often more sensitive to paint buildup because they contain small damping elements and precisely moving parts.

In this case, you can proceed as follows:

1. Remove the doors.
2. Carefully remove paint residues from the hinges using a fine brush or toothpick, taking care not to damage the hinge mechanism housing.
3. Then, apply a dry lubricant (no oil!) to the joints.
4. Open and close the doors several times to help evenly distribute the lubricant.

Do not attempt to use sandpaper on the hinges, as this may damage the mechanism.

anfeteo schrieb:
Carefully remove paint residues from the hinges using a fine brush or toothpick

Good tip, here is another: soaking the hinges in warm water with a little dish soap (if possible) can soften painted residues before removing them mechanically.

However, this only applies if the hinges are made of stainless steel or coated metal. This method is not recommended for plastic parts.

Afterwards, thorough drying is important before applying the dry lubricant.

Next time, you should either tape off the hinges or remove them completely. Otherwise, this will happen again. Applying a thin coat of paint also helps.