Regarding the first experiment, the bubbles didn't go away for days after cooling, and eventually the bubbles were pressed flat and torn off in one whole piece, with pieces of them.
After making the poster, I suddenly wondered about the results of the experiment and whether I could do any better, so I buy the materials and do the experiment all over again.
240ml water
48g Fish glue powder
12g glycerine
Stir constantly and heat to 95 degrees
Add soapy water
Portioning and colouring
Day 2: Bubbles are much drier
Day 3: Bubbles largely disappear and slowly appear as one piece
I'm going to rip it out in another couple of days.
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