router hole drilling jig for cabinet walls

Instead of using the stand drilling machine to drill holes in a cabinet walls, I used my Festools OF1010 router, the 17mm copying ring and a 5 mm drill router with this jig to drill nice and clean series of holes with a distance of 37 mm to top or bottom of inside of a cabinet and 32 mm to each of the holes.

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How to use it:
-> Align the jig's left or right side with cabinet wall's top or bottom edge and clamp it tight.
-> Place the router's copying ring into the first s