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Hi guys,
I’ve been continuing to research and amass parts for my TV Typewriter replica build. I have a blog of it here: http://bradhodge.ca/blog -- mostly working on the case right now to inspire me to push forward, but I’ve succeeded in getting almost all of the vintage 1973 or earlier chips I needed. Now I’m down to the PCBs again.
I guess I’m still kind of ‘green’ on this sort of thing. Ideally, I’d like to do my PCBs the way they would have in 1973. But I still don’t understand how that worked. Don Lancaster said the boards used were green G-10. I found this on ebay: http://www.ebay.com/itm/16-Green-G-10-FR4-Sheets-032-Thick-x-28-x-7-25-G10-Material-/141719358328?hash=item20ff21cb78
I guess what I’m having trouble with is understanding how a home PCB maker in 1973 would have gone about getting copper onto these boards and copying the artwork from the article. Is there any really good, baby-steps reading out there? I just want to understand the original process and if it is possible to replicate it here in 2015. I sort of understand the idea behind photo lithography.. I’m just not understanding how copper ends up on board, etc.
Much appreciated!
BRad