For the rubber undersuit, it was honestly pretty straightforward to make the parts: print the moulds, pour equal parts of each part of the Dragon skin, add some black acrylic ink, mix, and cast. I did ask many questions to others on Instagram before making my attempt at these parts though, and I learned a lot- happy to answer questions about this process. I started with the neck mold, cast a part— it was too short for my long neck and didn’t mesh with the helmet well (prolly cuz I’m 6’2” and skinny lol). So I reprinted that mold at a bit of a longer height along the Z axis, and it was perfect on my second cast!
As for wearing the rubber parts, that has been slightly more challenging. Basically each rubber piece is going to need some parachute webbing fused / embedded into it, so that you can clip in to the armor. (The only piece that didn’t need this was the elbows, they lock in nicely once you wiggle them on). Some of the rubber molds have intentional areas for you to thread webbing through a loop, but you still need to fuse them to the part first. I’m still learning as I go on these, and tackling the floating knee area is gonna take some fennangling as I try to get into the thigh/knee rubber combo.