ᐅ Why do some BILLY shelves not fit into their designated alcove?

Created on: 16 Jul 2020 09:13
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mikala
I have a question that has been on my mind for a while: Why do some Billy bookcases from IKEA not fit into the designated niche in the apartment, even though the dimensions in the description seem to be correct? I have measured several times, and the niche is exactly as wide and deep as specified in the product details for the bookcases. Still, the shelf is sometimes so tight that it doesn’t fit, or it sticks out too far. I’m curious whether this is due to manufacturing tolerances, inaccurate niche measurements, or perhaps the assembly. Maybe someone here has had similar experiences and can explain how to avoid or solve this problem.
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Victor54
16 Jul 2020 12:00
As faso31 already mentioned, I completely agree: measuring the recess is critical. Personally, I would pay close attention to sources of gain and loss: Was the measurement taken right up to the walls? Were the inner or outer edges measured? Are radiators or other structural elements involved?
sarla schrieb:
Recesses in apartments are often not exactly rectangular

I can only agree with that. Additionally, varying baseboard thicknesses often come into play, limiting shelves. My tip: Use a bevel angle gauge and measure the walls multiple times.
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liste
17 Jul 2020 08:19
I would like to add that Billy shelves have standardized dimensions, which IKEA provides on their website. However, the measurements can sometimes vary depending on the production batch or location. Additionally, the indoor climate is a factor: wood-based materials can slightly expand or contract, especially in conditions of high humidity or dryness.
pinpa schrieb:
Manufacturing tolerances, meaning +/- a few millimeters

These tolerances can be crucial when fitting shelves tightly. I recommend allowing some clearance and not expecting an exact fit to the millimeter, otherwise installation can become stressful.
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enrique7
17 Jul 2020 09:42
I have also been bothered by the fact that the product specifications do not clearly indicate that BILLY shelves are manufactured within certain tolerance ranges. IKEA itself states that the furniture is "made to measure," but this is only partially true, as the standard dimensions are more like guidelines.
faso31 schrieb:
Is it really measured professionally?

Unfortunately, almost never; it depends on the buyer. However, a more precise measurement on site is essential to avoid surprises. I also recommend allowing at least 1-2 cm (0.4-0.8 inches) of clearance on the sides when planning for the shelves.
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pinpa
17 Jul 2020 10:33
Great that so many aspects are being discussed! 🙂 I want to add a small anecdote: A friend of mine had the same issue and, just for fun, tried to "nudge" the shelf with a wooden block and a small rubber mallet. The result was: often it's tiny unevenness in the floor or on the wall that prevents a "tight fit." The shelf actually fits, just not with 100% contact pressure. So, avoid making major modifications – sometimes a little "wiggling" is enough to make it fit.

Of course, this is only suitable for people who aren’t expecting highly modern, custom-made shelving units, but rather for everyday situations. 😉
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mikala
18 Jul 2020 07:52
Thanks to everyone for the detailed posts! The information about the flexibility of recesses, the different measurement systems, and the tolerances is very helpful to me. The point from pinpa about small unevennesses is also interesting, as I hadn’t considered that enough before.

A quick additional question from my side: When purchasing a BILLY shelf unit, is it advisable to opt for slightly more width or height to allow for more adjustment room, and then modify the recess accordingly? Or could that be detrimental to stability?
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sarla
18 Jul 2020 08:35
In general, it is a good idea to allow some clearance when purchasing to facilitate installation. However, leaving too much space can negatively affect the stability and appearance of the entire shelving system.

BILLY shelves are designed to stand stable on a level surface. A steep slope in the recess or too much extra space can compromise the construction, especially if appropriate spacers or wedges are not used.

A balanced compromise of 5-10 millimeters (0.2-0.4 inches) of clearance in width and height is common. For special recesses, it is also advisable to make minor adjustments, such as modifying baseboards or checking the walls.