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The two components of the fishing rod were the casting mechanism and the box for the electronics housing. The casting mechanism is made up of 1/4" acrylic links connected with 6 mm bearings at the joints.  Before the final laser cuts of the acrylic links were made, the prototype was cut out of 1/4" wood. The electronics housing is a jigsaw box of 1/4" wood with 3 of the 4 walls glued to each other to minimize the collapsibility, yet retain the ability to open the box and view the circuit. At the bottom of the electronics housing is a 3D printed attachment out of black PLA with an opening that allows for a weight to be inserted at the front. This piece is screwed into the electronics housing. As a finishing touch, the wood of the electronics housing was painted black to match the color aesthetic of the 3D printed parts. Additionally, two other parts of the assembly were 3D printed. The connector cylinder and the line holder was were printed out of black PLA. The line . The line connector was super glued to the output link with the fishing line then ran through the connector and attached to the multiple joint of the output link.

In order to attach the casting mechanism to the electronics and motor, we laser cut small holes in the base of the casting mechanism that would allow us to screw it into the servo. The servo was mounted underneath the lid of the box housing electronics using M3 hex screws 1/2" long, and a hole was cut in this box so that the top of the servo would be flush with the box when mounted. The arm driving the horizontal sliding motion of the casting mechanism was mounted to the box through a bearing that was press-fit to a laser cut hole. We found that these points of contact with the box were sufficiently sturdy to withstand the motion of the whole assembly without coming apart. 

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