Collimator for reverse adjustment of laser mirrors.
it is screwed onto the D20 laser head, calls for a red laser module with a diameter of 10 mm.
it is necessary to cut 3 pieces of M3 threads for the adjustment screws. Printed without support PET-G, layer 0.1mm, perimeter 4x, print with thread up.
The author marked this model as their own original creation.