Blackout 5" arm jig

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I was determined to utilize Cobra 2206 motors with a 5-inch prop on my Blackout Mini H Quad, but the slots on the 5-inch arm were primarily M2 with 1/8-inch holes designed for specific 22xx motors. To overcome this limitation, I created a jig that would allow me to easily mill out 1/8-inch slots by aligning the existing slots on both the vertical and horizontal axes using a vertical mill.