laser-related epiphany
just realised how the optics in a laser cutter works. Laser tube is mounted parallel to the gantry/gantry rail attachments with 3 mirrors: one 45 degree which redirects the beam from the laser tube down the gantry rail, one 45 degree on the gantry which redirects the beam across the gantry and one rotated 45 degrees down the z axis to redirect the beam into the material to be cut.
bloody sickness gives me time to think!
