What about actuating mechanical leverages through an airtight membrane? What about some small hydraulic actuators with the pipe passing through a sealed enclosure? Or a well-lubricated Bowden cable? What about magnets, if the distances permit it?
What about actuating mechanical leverages through an airtight membrane? What about some small hydraulic actuators with the pipe passing through a sealed enclosure? Or a well-lubricated Bowden cable? What about magnets, if the distances permit it?