Extending Sausage

The extending sausage mold is used as a neck muscle actuator. It has undergone several iterations.

• The first iteration was completely 3d-printed.
• As in any fiber reinforced actuator, comprised of three steps:
  1. Dragon skin chamber with threads for fiber wrapping.
  2. Ecoflex skin wrapping the fiber.
  3. Capping the sides and inserting the tube.
• It went through several modifications, but all of them had issues with mold release and bubbles.
• Model files found here

• Uses a metal lathe for the air chamber instead of a PLA sausage.
• Inner chamber is easier to release, but top part still hard to release.
• Still has issues with bubbles.
• Mold files are here.

• Uses silicone injection while tilting and a bubble escape path on the highest point.
• Top part (and maybe also bottom) should be printed with the Formlab.
• Has a notch for pulling out the top part.