I've been wanting one to go with my Spock/snakes kit and Mugato kit. I could not find one from any garage kit maker. I figured I will have to make it from scratch.
My 1st thought was to sculpt it, but I'm not that good at sculpting.
I settled on Vac forming.
From this screencap the Horta suit is actually rectangular in shape.
I settled on using aluminum foil, crushed and formed, for the master.
My 1st pull, without vacuume for a soft look:
Too soft and too flat, so I made a new master:
And used the vacuum this time:
Not too bad I thought, I can work with it.
Primed, painted, and dusted with baking soda for texture: