I have put together 4 optics in the Faraday Isolator, out of 7 that should be there eventually. These include: Ca wedge polarizer s/n 12 currently on the input side Ca wedge Polarizer s/n 03 on the output side TGG crystal s/n 10, presently on the "long" tube together with Quartz rotator Still not assembled are: 2nd TGG crystal -- will put s/n 09 in tomorrow when Al-Bronze cap is out of the C&B oven HWP and DKDP -- don't yet have the proper mounts To install Ca wedges I used a slightly different technique. I cut two 5 mm long sections of the Indium rod, and rolled them together into one fat 5 mm long rod. I then pressed that rod onto the setscrew, and still had enough Indium thickness to tighten on the Ca wedge. The TGG is installed with Indium foil wrapped around the wedge. I had to roll two slices of the Indium foil together, as the lengths (or even the diagonals) of the foil squares that were delivered are shorter than the circumference of the crystal. The Quartz is installed withOUT the foil. Instead it contains at least 3 layers of the Indium wire on the cap side to keep it in place. More photos may be found on the Resource Space.