ᐅ Drilling KALLAX Shelves for Additional Inserts – Risky?

Good morning everyone,

I am currently considering adding extra inserts to my IKEA KALLAX shelf unit, which I plan to install myself. My question is: how risky is it to drill into the KALLAX shelf to attach additional inserts or brackets?

My main concern is whether drilling could compromise the stability or material structure to the point where the shelf might be damaged or even break later on.

Has anyone had experience with this, such as the best approach to take, which tools should be used, and if there are specific areas on the KALLAX that should never be drilled?

I look forward to your opinions and advice!

onmar54 schrieb:
How risky is it to drill into the KALLAX shelf to attach additional inserts or brackets?

Hello,

Basically, drilling into the KALLAX can be an acceptable way to customize the shelf to your needs. It is important to know that the KALLAX is made of compressed wood fibers with a veneer layer, so it is not solid wood. This means the material is somewhat delicate.

It is best to use thin drill bits (e.g., 3-4 mm (0.12-0.16 inches)) and avoid placing holes too close to the edges, as the panels could break out. It is also recommended to test drilling in an inconspicuous area first to see how the material reacts.

If stability is the main concern, you should avoid making too many holes and not damage any load-bearing surfaces. A drill with adjustable speed is also helpful to prevent applying too much pressure and heat.

If you plan to mount heavier inserts, additional reinforcement might be advisable. I hope this helps you for now!

KALLAX is easy to drill if you proceed carefully. Use a small drill bit, drill slowly, and avoid placing holes too close to the edges.

Peone schrieb:
The KALLAX is made of compressed wood fibers with a veneer layer, so it is not solid wood.

This is an important point. The construction makes the shelf sensitive to point loads. If you want to drill, you should avoid penetrating the adjacent side panels. Plan the holes so they are as centered as possible on a surface.

It can also be helpful to place a thin piece of wood or felt under the drill to prevent surface splintering. Screws with wide washers can also distribute the load more evenly.

For additional inserts that are only lightly fastened, the KALLAX generally holds up well. For heavier modifications, I recommend caution and, if necessary, additional reinforcement from the back.

Some time ago, I drilled into a KALLAX shelf to attach cable channels and small shelves. I first practiced on an old piece of wood and learned that using a small drill bit and a steady hand makes drilling quite manageable.

KALLAX is not solid wood, but it’s not extremely fragile either. The key is not to apply excessive force—the panels don’t respond well to heavy pressure.

And yes, I didn’t find it very risky as long as you’re gentle. 🙂 But of course, avoid drilling holes as large as a coffee mug on the thin edges 😉

onmar54 schrieb:
Whether drilling compromises the stability or material structure to the extent that the shelf is damaged or even breaks later on.

In summary, drilling into KALLAX units is generally possible but requires careful planning and caution.

The material consists of particleboard with a melamine coating, which is relatively brittle. Therefore, holes should not be placed too close to edges or at joint areas to avoid chipping and cracking.

It is recommended to start with small drill bits and to avoid large cutouts in load-bearing panels. Additionally, using screws with wide washers is advisable to distribute the pressure around the hole edges.

Finally, for heavy-duty applications, it is advisable to add further reinforcements, for example, from the back. For light modifications, drilling with care is acceptable.