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Finally, the initial mechanism pin joints were all comprised of the 6mm x 24mm slotted pins, and held together by 6mm o-rings.
Due to the short pin lengths, there was little room to work with between adjoined links. The o-rings also did not adequately hold most of the joints together, so links had a tendency to pop off the joint during operation. Additionally, the short pins left little clearance above the ground, so the joints would catch the edges of the ground board and slider slot.
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Bolts and nuts were subsequently used to keep the links from separating during operation. Long bolts and the o-rings were also added to allow more clearance between joints and the ground. The increased clearance between links and ground, as well as solid joint construction ensured the mechanism could rotate easily without issue. However, the o-rings had a tendency to brake the links, so were replaced with washers.
