Hi Rylan,GyroLaserFrame1.jpg
I was thinking for long time over the passed holydays and I came to conclusion that you do not need mirrors at all to achieve same functionality of printers head. Mirror are good but simpler solution is Gyro Sphere. Using same effect of gyro movement rotation of the ring around x- axes and rotating with ring around y- axes. From SF movies closest analogy is “Deep Space 9” station which has “horns”. If you take two of these objects, one smaller (holds laser) and one bigger connected with x rotation axes to each other and bigger one connected with frame through y rotation axes.
Horns on each of rings are spherical solenoid cores which are controlled with wire windings. Movements are controlled at the same principle but no mirrors. Default position of the laser is centre of the structure hanging like pendulum. Gravity does its work and when is not current in the windings it is stabile in the origins. Following drawing showing my idea.