This Nintendo Nes style knob works well for the joystick switch. We printed them on an Ultimaker in normal and high quality, both came out ok. I also included a cover for the Laos panel so the pcb and switch are better protected. You can cut the cover with your lasercutter. Make sure there is enough space between the pcb and the cover otherwise the joystick and knobs cannot move enough. We used 10mm distanceholders. I have included distanceholders in the cover file. More about Laos open source lasercutter can be found here: http://redmine.laoslaser.org/projects/laos/wiki/LAOS_I2C_Panel_v04