Assembly

Applying brackets to FFT.	(Image 1) Print out template from the zip folder and cut on the dotted line. Poke holes in the center of all circles and roll paper into a tube. Secure with tape. (Images 2-4) Roll torus though paper tube, marking all holes with a marker. When all available holes are marked, continue rolling torus through tube, marking remaining holes as you go, making sure to mark both inside and outside of torus. (Image 5) Carefully glue brackets next to each marking, making sure not to place glue directly on markings. Note: Glue on markings may not adhere well to torus. (Image 6). FFT with all brackets attached.

(Image 1) Print out template from the zip folder and cut on the dotted line. Poke holes in the center of all circles and roll paper into a tube. Secure with tape.
(Images 2-4) Roll torus though paper tube, marking all holes with a marker. When all available holes are marked, continue rolling torus through tube, marking remaining holes as you go, making sure to mark both inside and outside of torus.
(Image 5) Carefully glue brackets next to each marking, making sure not to place glue directly on markings. Note: Glue on markings may not adhere well to torus.
(Image 6). FFT with all brackets attached.

Assembled contractile rings.
Stretch NiTi coil actuator to 120mm. Thread coil through a single row of brackets around the FFT. To tie the ends of coil with magnet wire, insert magnet wire though the center of 3-5 coils on each side and tie a knot. Use a strip of electrical tape to secure and prevent the ends of the coil from shifting and shorting durring inversion. Continue for all rows of brackets you intend to mobilize.

Stretch NiTi coil actuator to 120mm.
Thread coil through a single row of brackets around the FFT.
To tie the ends of coil with magnet wire, insert magnet wire though the center of 3-5 coils on each side and tie a knot. Use a strip of electrical tape to secure and prevent the ends of the coil from shifting and shorting durring inversion.
Continue for all rows of brackets you intend to mobilize.

(Top) Wiring of prototype. (Bottom) Simple wiring diagram of drive system.

Take a length of magnet wire roughly 3X torus length and sand off the enamel.
Choose a column of brackets alongside the magnet wire knots. Thread the sanded wire through the full column of brackets, making sure the wire contacts the actuator wire in each one. This will be the common ground.
Take a length of magnet wire roughly 3X torus length and sand the enamel off roughly 0.25" - 0.5" off the ends. Repeat with wires for as many actuators as you intend to mobilize.
Connect these wires to the brackets on the opposing side of the knot, ensuring each is individually connected.
Connect all free ends of these wires to mosfets, one mosfet per actuator.
Supply the mosfets with 20 volts from a regulated DC power supply.