I read your idea on the mermaid tail, I think you should look up videos on how to make one:)
I have(probably should watch more, I found a 14part series on youtube someone made, i need to finish that). Thats how I got the idea of using spandex and latex(both being stretchy materials so putting them together shouldn’t be so bad.). All I need aside from that would be the mono-fin. I pretty much have everything I need, but I might need to go get a gallon of latex. I’m using ben nye brand. Its able to cast in molds. My only concern would be that it might stick to itself. I know theres powders and stuff that you can apply to it so it doesnt so that, but those will probably wash of.(I might just use baby powder for storing it) I’ll probably look into other brands as well to see it theres anything stronger. Cause I’d be sitting on it and bumping into things so it might tear…
My whole process of how i’m thinking of doing this is
Make the mold for the scales. Set aside to cure over night.
While that’s curing, make a spandex tail. Easy peasy. i might make it double layered.
Mold is done curing, clean it out, mix the latex with some color. Best part here is that the latex can be done in parts so I could make a lighter shade for the tips of the scales then a darker shade for the base. Also, I might add a little metallic powder or paint to make it shimmer :D
After the scales are cured, gluing them down on the spandex with more latex as the glue. Ben Nye drys fast enough for it to work nice enough. Puzzle piecing them down and what not.
I’m gonna do a small scale(punogod) test to see if this latex is reasonable.
So, yeah, thats what I got.