Manufacturing and Assembly-JH

Based on my design, I decided to 3-D print my links and pins. Using 3-D printing allowed for quick changes to be made once I noticed an issue as well as control of the thickness of the material and insertion of features, such as holes and slots for sliding. As discussed earlier, I had to make adjustments on the pins, however once that was corrected, the mechanism assembled well. I made my links 1/4" thick to provide strength and not be too flimsy with 1/2" pins to be inserted. I also created a base for the input pin and handle to sit in to allow for rotation while still restraining the mechanism to the ground. For the ground link, I used a piece of 1/8" plywood that I super glued the one grounded pin and the input base into. For the rails, I used square plywood rails found at Home Depot that the slider sits between. All of these materials were very easy to find and cost less than $10 total, allowing the mechanism to be recreated very easily. Pictures of the free links and pins are shown below: 

When assembling, I initially tried to create the mechanism the way that the model was, however my link and ground placement didn't allow for full range of motion. I modified the design to allow for my chosen lengths to work better and the fully assembled mechanism is shown below: