Tom B. wrote:So here the scratches/grooves would be surface relief features created because the hardened gelatin swells less? Maybe it could be aluminized or plated somehow as is done to make those shiny metallic embossed holos...
I hope they will look like this. As I look at the stripes of photoresist 5-20um wide and 2-4um thick - they are shiny and reflective. So maybe it could work with gelatine stripes alone too.
greetings
Adam