ᐅ Why are the connectors on my BILLY shelf coming loose?

Hello everyone, I have an issue with my Billy bookshelf where the connectors keep loosening, even though I assembled them correctly. The bookshelf is placed on a level surface and is not subjected to excessive load. The screws are initially tight, but after a few days or weeks, they loosen on their own, causing the bookshelf to become unstable and sometimes slightly wobbly.

Can anyone explain why this happens? Could it be due to the material, the assembly, or the type of fasteners used? I even treated all the screws with an appropriate thread-locking compound, but the problem still occurs. Is there a way to fix this permanently without having to take the bookshelf apart? Any advice or shared experiences would be greatly appreciated, thanks!

The issue with loose fittings on BILLY shelves is often caused by vibrations or slight movements. It is best to tighten the screws and, if possible, use small washers as well.

If the connectors come loose despite correct installation and screw locking, this could be due to insufficient bearing surface or stresses in the wood. BILLY shelves are made of particleboard, which can sometimes "move" when tightening. Try not to overtighten the screws, but rather tighten them evenly and carefully. It is also worth checking the fasteners for damage or incorrect tolerances.

sonlis schrieb:
this may be due to an insufficient bearing surface or stresses within the wood

I agree with that. Additionally, I recommend checking the BILLY connectors for so-called play or slight movement. Especially with older shelves, the material may have warped, causing the connections to no longer hold securely. Another tip: make sure the shelves are not carrying loads that are too heavy to avoid overloading the connection principle.

The typical fasteners used in BILLY shelves are cam connectors and dowels. If the cam screws become loose, it helps to reinforce the screw holes with wood glue or a small wooden block before assembling the joint. This creates a tighter fit.

Additionally, it is recommended to secure the shelf to the wall. This reduces movement and minimizes the loosening of screws.

SETHBLA schrieb:
It’s best to tighten the screws and also use small washers

Thanks, using washers is a good idea. However, the drill holes are quite tight – will washers really fit in there, or could that cause issues with the cam connectors locking properly?

blapau schrieb:
to fix the shelf to the wall

The shelf is indeed secured to the wall, but the screws inside – at the joints where there is no contact with the wall – still come loose.