He can crank out a 6/6 mil double-sided PCB in 45 minutes flat ... conductive surface—the walls of holes drilled in a sheet of copper clad–conductive. While there are some established ways ...

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You could use Tinit to chemically plate the copper. Here is a different tutorial describing its use. Drill all the holes for the through-hole parts using the correct size PCB drill bit and rotary ...