It looked like a blank board with no copper, they then drilled holes, silk screened it, and put into some chemical and out came copper looking circuit traces. Do I know if they used standard etching methods, no, that is why I ask the question in case I was merely deceived by their explanation.

I do think that they may have skipped some processes there. If there were some technique to have a board with copper without using copper, that would have been a very famous technique and we would see decline in the copper price.

Inictllgenee and simplicity – easy to understand how you think.