Made this wrench to adjust the tilt setting on my Overbed Table. Just print it and slap it on the knob and it'll be good to go. It's snug so it stays in place, but it's easy to add and remove, so you can put it in any orientation you like or move it between different knobs.

This model was made in Plasticity. I only have the trial version so I only have a low-resolution STL… but if you have the indie or studio versions then you can export it or even modify it using the Plasticity file that I've included.