Hi Guys,
It's the other way around the first Visors had black elastic on one ver. and another ver. had ear tabs like glasses. It was not the pressure on his head that gave him the headache it was the rods in front of his eyes. The last ver. was the ones with the screws and clamps which Lavar helped to work out so he could work with them on longer and it was not so hard to take them on/off.
There were also hard plastic and rubber ver. for stunts.
Droidboy
The photo you have chosen is of the clamp on style. The holotape cover is attached to a sheet magnet which sets no the set screw that adjust the pressure plates on the temples.
In the early ver. the bars were 1/8 inch brass tube with a 1/8 inch space between them. The later ver. were gold plated alum. to reduce the weight on the nose. The main body of the Visor is alum. the upper and lower plates are styrene sheet. There is also a vacuumformed nose cup of Lavar's nose. So it aligned in the same place. The main body was machined flat and then bent over a tool to match Lavar's head size. Then we would make the little tweaks to make it fit just right.
Hope this helps,
HMS Mike
