ᐅ Are there any tips for assembling Ikea Besta without the instructions?

I recently bought an Ikea Besta furniture unit but unfortunately no longer have the assembly instructions. Do you have any tips or experience on the best way to assemble a Besta shelf without the official guide? I am familiar with the basic mechanics of Ikea furniture, but specifically with Besta I am unsure what to watch out for to avoid mistakes or to make the assembly more efficient.

It’s best to sort all parts and screws first. Then assemble the side walls, with the back wall usually installed last. Make sure all dowels are properly seated.

Hello tracarlin, generally with Ikea Besta units, it is helpful to start with the side panels and position the door rail systems during assembly. If you don’t have instructions, you can sort the parts by size and shape and begin by building the basic structure. The back panel is usually attached last to provide stability. Feel free to try fitting the parts together loosely first to better understand the assembly process. It is normal to feel uncertain at the beginning – in the end, patience and a systematic approach will help.

It is important to correctly orient the panels of a Besta shelf, as the holes for guide rails or back panels are often not symmetrical. If you install the side panels the wrong way around, it can cause issues later when fitting the doors. My advice is to carefully check the holes and position the panels with the drill holes facing inward toward the planned back panel side. Additionally, you should pay attention to the connectors, which are usually reinforced with an X-shaped metal plate to enhance stability.

Here is a simple step-by-step guide on how to assemble an Ikea Besta without instructions:
- First, carefully sort all parts and screws, and distinguish the panels by their function (side, bottom, top, back).
- Stand the side panels upright and check where the holes for dowels and screws are located.
- Insert connectors like dowels and cam locks, but do not tighten them fully yet to avoid assembly mistakes.
- Attach the bottom and top panels between the side panels.
- Only attach or nail the back panel at the very end, as this provides stability.
Common mistakes include assembling the side panels upside down or attaching the back panel too early, which makes adjustments more difficult.

It is also important to keep in mind with Besta that there can be different versions and dimensions. If you have multiple shelf parts, check whether the metal guides or holes for doors and drawers are identical. Especially with older models, the design can vary slightly. Ideally, start by sorting and grouping all screws and connecting parts to keep an overview. When assembling, also pay attention to the weight: the side panels should be stable enough before mounting additional parts.