Making Simple Robots, 2nd Edition

7. On the opposite side, cut slots at the middle and top marks. Insert the

middle and top rungs through the slots

(Figure

G

)

. Fold down the extra

bit and tape closed. It’s okay if the sides of the triangle are pulled in a

little

(Figure

H

)

.

8. For the bottom rung, tape the overlapped ends together. Reinforce the

rung with extra tape.

9. To test the fin gripper finger, squeeze one corner of the base to make

the gripper curl in that direction

(Figure

I

)

. If it doesn’t work, check

that the rungs are not bending when the fin curves. You can reinforce

them by wrapping them with tape. Also, make sure the tabs are held in

place tightly. Add extra ...