Part 4 - Print inner layers

To produce the inner layers of our multilayer PCB, we start with a panel of laminate. Laminate is an epoxy resin and glass-fibre core with copper foil pre-bonded onto each side. The first step is to clean the copper. We print the panels in a clean room to make sure that no dust gets onto the surface where it could cause a short or open circuit on the finished PCB.

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