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Caleb Add the routed boards for 4, 6 and 8 layers and the JLC experiment 1be7541
4 layers: 77 nets, 249 connections to close (2 planes: {"GND": 1, "+3V3": 2})
4 layers: pass 1, 54 open of 249, 300 rip-ups, 99 s
4 layers: pass 2, 55 open of 249, 638 rip-ups, 200 s