As I have been unable to find the original filter holders, I decided to draw them in CAD software with a slightly nicer design (smaller rectangular tab whose long edge is flush with the outer circumference of the mount instead of slightly raised) and get them fabricated. Here're the blueprints so far:
- Screenshot 2021-09-28 at 21.22.33.jpg (45.89 KiB) Viewed 3312 times
There's one for the thinner slots and one for the thicker slots.
I was planning to simply fix the polarizer in place in the E-W position, as my analyzer is rotatable 180 degrees so I will still be able to control the degree of extinction. I have seen a photo of the original Olympus polarizer and it is fixed as well.
Instead of sticking it down with E6000, I might try small bits of Nano Magic Tape which is extremely sticky but does not leave any residue after a long time and can be picked off with a toothpick without using solvents.
I am also toying with the idea of incorporating a snake-eye screw ring that screws into the mount to hold the filter in place so I don't have to glue it down. The filter I am getting is 2mm thick while the available depth in the thick mount that goes into the slot meant for the pol filter (I have switched from a BH2-RLA to a BH2-MA so the number and position of slots are different) is 6mm so there's 4mm of allowance for the screw ring. But this is probably going to be expensive and not worth it besides giving me some training in drawing screw threads.