Fourth attempt. Softer silicone with styrofoam balls inside, turned out the best so far. Thickness ended up being a little bit too thin in the bottom / entry of the mold (holes in the surface).
Put styrofoam balls inside the object and pulled from the outside. The distortion is pretty wide and not as localised as I hoped, however, securing the object more tightly could be a way to solve this or making a different model that has little knobs that could be pulled.
Unfortunately the styrofoam balls easily break. I think i need something else to put inside that i can use to distort the object. The wire basically cuts through it. Not having an object inside will tear the silicone, I need something blunt / round to pull it from the inside.
I should also experiment with different colors / shapes for the object.
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