Ikea Samla 22l Rollers

I use Ikea Samla 801.029.76 (22l , 39x27x27cm) for filament storage and the boxes stand on the floor under my desk. These rollers help me to access them more easily and they protect the floor from scratches.

The rollers are small enough that you can still stack the boxes without the risk of the top one rolling off.

Additional Material

For each roller you need a metal rod with a diameter of 4mm and a length of 40mm. Any metal will do: aluminium, brass, steel. Take whatever your hardware store offers. In this diameter, mine only had brass. Aluminium rods can also be ordered on amazon.

With two rollers at each corner, I needed 8 rods. Using just 4 rollers should also be possible using only the outer positions. But I haven't tested this.

Printing

You need two bases and two mirrored bases. I printed them in PLA with 25% infill. Somewhat less should work too.

Each roller consists of an inner and outer part. I printed the inner part in PLA. The outer part needs to be printed in TPU. Both printed fine standing up and didn't need a brim.

If you cannot print TPU, you might use the combined roller. However, the floor will then have to withstand harder rollers.

Assembly

Press the TPU over the inner roller. Because the TPU part is tighter in the middle, this requires some force. But in the end, it should be easy to center it on the slightly longer inner part.

Use the metal rods as axles to fix the rollers on the base. This also needs some force and you probably won't be able to remove the rollers later on. 

If printer tolerances are correct and IKEA hasn't changed the box, this assembly should fit easily into a bottom corner of the Samla box. It will stick there thanks to a slightly smaller radius on the outer corner.

The recess in the center bar can be used to pry it out again with a screwdriver.