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Our final prototype ended up being a simplified version of what we had originally designed. Instead of the linked system, in order to simplify the system and better match the exact profile of the knife, we decided to go with a slider-crank and a cam follower that would move the whetstone along the profile of the knife and then cause the knife to rotate as the linear slide comes into contact with the cam. This prototype was designed to be a model of how the system would be housed with a simpler mechanism, as the simulation was conducted using the original, more complex mechanism. These combined were a proof of concept for the whetstone knife sharpening mechanism where, given time to improve and refine the design, we could use a similar housing geometry with the actual linkage mechanism.