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This cap features very obscure geometry. There are only two faces that are square. Everything else is a compound angle or complex parametric curved surface. In this case, I referenced all my measurements off the two known square sides and measured all complimentary angles accordingly.

Sometimes this involved using square highspeed tool steel as a reference. The hinge cap has 3 pegs that protrude from the cap. These pegs mate into alignment holes in the face of the back camera shell. Tool steel was used here in order to access the square bottom surface of the part and allow for sound measurements.

There were curve balls of course. The bottom of the part was reference horizontal, but the edges orthogonal to that face were not co-linear.

Additionally, the top was drafted 2 degrees from the horizontal and the open side was drafted 3 degrees from the Y-axis.

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