Ikea Poang Chair Cup Holder

A cup holder for an Ikea Poang Chair

There are already some cup holders for the Poang Chair on Thingiverse. However, I wanted something that mounted more securely, but also didn't require other hardware (like nuts and bolts) to hold it in place. I also didn't want it scratching the wood or sliding around loosely on the chair's arm. To accomplish that, I made a two-part design that snaps together. Also, I over-sized it a bit where is goes around the chair arm, so you can put a 70 x 160 mm wrap of bicycle inner-tube underneath it. That protects the wood and minimizes movement. (The inner tube I used was was about 0.75 mm thick, and my Poang chairs have a wood cross section of approx 62 mm x 22 mm, so I designed around that.)

The cup holder is large enough for a couple of my wife's favorite cups (very important), as well as most standard dining cups. It also holds a standard beverage can or bottle. There are two slots for the cup handle, so you can mount it on the right or left side of the chair.

To install, wrap the inner tube over the top of the chair arm and put the main cup holder over the top of it. Then from the underside, push the 90 deg hooked end of the locking piece in to the main part, and rotate up and snap it into place.

Be forewarned...

It stays on pretty well. To remove, get a medium flat head screwdriver and put it behind the middle latch of the locking part (see photo). Pop it out of it's groove, and down. Then pull up on the cup (so the outer latches release), and the parts will separate. Just be careful, as you don't want to scratch your chair. Maybe practice putting it together and taking it apart while not on the chair.

Notes:

Orientation:
I printed both parts on their side, to get maximum strength where it was needed. The locking part is ideal printed that way (both for strength and aesthetics). For the main cup holder part, that's unfortunately not the case. Printing on it's side puts support on some of the more visible areas of the cup holder, and makes support removal and cleanup more difficult. Ideally you'd print with the cup opening "up", but I was concerned about it breaking more easily. If you decide to print it "cup up", let me know how it goes.

I used ESUN PLA+ for the main holder part. It's supposed to be stronger than regular PLA, so I thought that would be a good idea. In hindsight, that was probably unnecessary, but it printed nicely anyhow. For the locking part, I used a generic black PLA. It seemed more flexible than the PLA+, so better suited for flexing and snapping into location. I printed with two walls on the locking part, and three walls on the cup holder part, with 35% infill on both.

Print time on the main holder part is about 20 hours. On the photographed part, I had to restart the print about half way through because of a failed nozzle heater. The line you see in the photos is a result of that. It's not part of the model. The locking part took about 3 hrs to print.