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Well, its good to know it turned out well. I hope he comes back to describe the rest of his efforts and his presentation. It would be interesting to see his completed display.

I made some brackets to hang onto indicator stands... Its a piece of 1 by 1/4 inch aluminum bar. Drill a hole one one end which fits the indicator stand, and then a couple of holes on the other end for whatever the optics have. I put in a 1/4" and a number 8 machine screw hole. Slit the alumin...

As I was looking at this method I saw a way to use the same principle to get two vertically polarized beams from a polarizing cube beamsplitter if you don't have an output waveplate and with only one additional mirror. If you position the cube so that the the 90 deg output is traveling out verticall...