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A machined lower vertex is shown on the right.

The dot machined onto the motor mount face denotes the side of the vertex that was clamped against the reference surface in our manufacturing fixture during machining.

It is recommended that you build the frame with all the dots facing the same side. We build our machines with the dots facing up, as that is the most accurate surface (due to its proximity to the reference surface in machining) and we build our machines with the motor connectors facing down (away from the dot).

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