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I notice in these videos that the round viewing aperture is also recorded into the image. I wonder if that means that the Lippmann photograph recorded the three dimensional position of the lens used to focus the image onto the plate?

Here's a sample, on 50x75mm glass. It's a recent HOE, with a palindrome number.

An easy way to mount photopolymer film to glass plates is to use a pouch laminator. The one I've used since the mid-1990s is the Ibico GL-9, often still available on Ebay. They were made first in Mexico, then in Korea. Be certain to get one made in Korea (it is mentioned on the label on the bottom),...

System #2 if you don't have a stable table. System #1 if you do, and want best results. Both will work fine. Others may say system #2 gives best results.

You have it essentially right, but in practice a computer generated image would be used (instead of a sculpture), and that image would be digitally predistorted to give you what you want. There would also be a huge problem with lighting the resulting film, unless the reference beam used to make the ...

My favorite tape too, and a "must have" for any hololab. You're right about edge "ringing" from cards used to mask edges, but if they are only a few inches away, the issue is minimized. Also, I'd worry about tape touching photopolymer that's only very lightly attached to the glass. If one uses ink o...

Those lines can form from reflections off the bottom edge too. I like to use cardboard masks to block light from hitting the edges. Nothing to clean. Really nice to see such good results with that material after four years! Especially with a darkish subject. I think the "iso lines" you mentioned at ...

The one I use does not have an LED light on the nose.

Tank of nitrogen.

First, I do it in a dedicaterd area that's kept clean. I use an anti-static airgun (pictured below) to blow the dust off the glass plate first. That keeps dust from being attracted to the surface. Then I use a small laminator I got and modified 20+ years ago to put the film down. Finally, I trim wit...