Hi Steve
Nice
Are you building these commercially now?, if so, can we have an idea of price. PM me if you don't want to go public.
Did you get any further with the multi-colour one with modulation as you slide your hand up and down the beam?
Cheers
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001