ᐅ Shortening BILLY bookshelf shelves – is it possible or not?

Hello everyone,
I am considering using a BILLY shelf from IKEA but would like to know if it is possible to cut the shelves to a custom width.

Here is my situation: I need the shelf to fit into a very narrow niche that is only 25 cm (10 inches) wide – however, IKEA only offers shelves about 28 cm (11 inches) wide. I am wondering if it’s possible to trim the shelves to the desired width without compromising stability or functionality.

Has anyone had experience cutting BILLY shelves? How is the material – is it easy to saw, and how do you handle the edges afterward? Is it necessary to seal or treat the cut edges in any special way?

Or would it be better to switch to a different shelving system that comes in narrower sizes by default?

I’m looking forward to your informed opinions and tips!

Hello Zionte,

to answer your question about shortening the BILLY shelves: Generally, the shelves are made of particle board coated with melamine resin, which makes cutting possible but somewhat tricky.

As you rightly assume, they can be cut, but you should definitely use an appropriate saw—fine-toothed saws or a table saw are ideal. The edges are covered with a plastic veneer, which will be damaged when trimmed. To protect the cut edges, it is advisable to use edge banding or edge protection strips, or to seal the edges with paint or wood glue, for example.

Important: The stability will be somewhat reduced because you are altering the fixing and possibly the shelf edges. Especially with wider shelves, this could lead to sagging, although for a narrower shelf of about 25cm (10 inches), the load is usually not that high.

I have cut shelves myself before, but always with the intention of using them in the unit as additional storage or for light loads. If you want to use the shelf for full storage purposes, I would recommend not exceeding the load capacity or reinforcing the shelves additionally.

If you have any further questions about tools or processing, I’m happy to help 🙂

Deandre schrieb:
As you correctly suspect, they can be cut to size, but you should definitely use a suitable saw – fine-toothed saws or a table saw are ideal.

Exactly, these shelves are made of particleboard with a melamine coating, which generally allows for modification – with clear limitations.

From a technical standpoint: When trimming, there is a high risk of chipping the edges, especially because the melamine coating is brittle. Untreated cut edges are vulnerable to moisture and mechanical damage. Therefore, I strongly recommend smoothing the edges with fine sandpaper after cutting, and then applying edge banding or a suitable sealing strip.

Regarding stability: Shortening the shelves only slightly affects their load-bearing capacity, as long as the shelf isn’t too deep. The BILLY shelves are standardized at 28 cm (11 inches) depth; at less than 30 cm (12 inches) depth, sagging is hardly an issue.

So: yes, cutting is possible, but it requires careful finishing of the cut edges to ensure lasting functionality and durability. If you have the right tools and some DIY skills, you can certainly do this. Otherwise, customized shelving systems or specialty shelves might be a better option.

Zionte schrieb:
Has anyone had experience cutting the BILLY shelves? How does the material handle cutting, and what about the edges afterward? Is sealing or any special treatment definitely necessary after cutting?

This topic comes up quite often, and I can add that although the BILLY shelf material can be cut, you should definitely use a saw with a very fine tooth blade to minimize chipping. Even though the shelves are relatively inexpensive, the effort required to cut them should not be underestimated.

In addition to the sealing methods mentioned, I recommend not removing the laminate before cutting, but rather making the cut as cleanly as possible through the coating. Many people use fine sandpaper and color-matched paint or special edge banding (self-adhesive) to make the finished edge look better and last longer.

CARLA schrieb:
If you have the right tools and some DIY skills, you can definitely do this.

I agree with this assessment, but I would be cautious if the shelves will be heavily loaded. For books or heavy equipment, I would rather advise against cutting or at least suggest additional support measures.

In short: cutting is possible, but it requires preparation, proper tools, and finishing work.