Rotating stage

[Glot]

I cut some 4mm HDF board to fit on my stage. In that I cut a large hole with a hole saw. I cut a similar price with a slightly smaller hole. I glued one to the other. I cut a piece of round glass to fit neatly in the larger hole. A simple rotating stage. An A4 sheet of reasonably good polarising film cost A$20. I cut a disk to go under the stage. I cut another and put it in the axillary lens cover my stereoscopic has. I turn the upper to achieve extinction for XPL or remove it for PPL. I just put it on a turn or two. A slide out or swing out filter is on the list. Another way is to make a card tube to fit over the eye piece and attach the film to that. It can easily be lifter off.

[wstenberg]

Sounds good. Can you post a photo

[Chris Dee]

I've been experimenting with some polarizing films also. Further details of your results would be appreciated.