Hey I've been drafting up prosthetic ideas and I believe I have figured out how to recreate the penile implant pump. I figured if you recreate the prosthetic like a actual implant & phalloplasty would be you could create a realistic feeling prosthetic with functions. Give it the ability to go from flaccid to erect. Unlike the current and only model that does it, the Tyron, it will have multiple layers of silicon for a real squeeze and texture not the bike tire tube effect. Back to the pump unlike the Tyron which uses a single cylinder (I believe) it will replace the corpus cavernosum using two cylinder, one on each side above the urethra opening, giving the ability to create a stp. The multiple layers of silicon will be epidermis, dermis, and subcutaneous tissue, with a movable skin, under the skin there would be silicon veins that will attach at two points tip to tip, leaving a free moving middle to assist the movement of skin and vein. I'm thinking a tab will be necessary to counter the weight and semi-cupped design & 3D floating balls for STP function. I'm still drafting up everything and its not my priority because my degree-school is kicking ass, but I'm reading up on molding and silicons and special FX sites. It would be nice to work with someone who has actual training in SFX or abilities. If anyone is in Houston, TX area or who I could meet up with at least one time to show me some techniques let me know. Any one have any ideas, or any better ideas how to create a working stp that isn't bulky or uncomfortable? I like the nipple STP style and was thinking molding a matching design behind or above the balls you could lift up up to you to seal against the urethra idk?