Kaleido Technology have developed and optimised their prism-cutting process and material selection to offer smooth, defect-free custom masters with very high precision on groove angles, groove linearity and other critical parameters. Applications include a wide range of automotive reflective structures. Unidirectional tools are offered in sizes up to 300 x 150 mm, and general tridirectional multi-faceted structures are offered in sizes up to 100 x 100 mm.