Trefoil Tentacle

The trefoil tentacle is a multiple DOF actuator designed by Matthew Borgatti. It is made using 3 linear shells that are bolted together into one single mold.

The fabrication process is described on the Thingiverse page. Further details are described in Matthew's blog.

The mold files can be downloaded from Thingiverse.

According to the thingiverse page, the supplied molds can only be printed using Power,Object and DLP printers.

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The air is fed to the tentacle from 3 separate tubes. A special housing for the actuator and control board was laser cut.

More images are found on the Flickr page.