![Two pieces of ancient, unetched phenolic circuit board [4032x3024 - 771KB]](https://pic8.co/sh/zGA0U4.jpg){kind=link}
I thought this was going to be an ancient aliens or Egypt ole tech post. It's not but I'm still impressed.
I thought this was going to be an ancient aliens or Egypt ole tech post. It's not but I'm still impressed.
This board is stamped "T" as the factory that made it also made Textolite, i.e. resin impregnated fabric that formed hardboard material.
Manufactured at GE Coshocton (Ohio,) probably before 1985.
This board is stamped "T" as the factory that made it also made Textolite, i.e. resin impregnated fabric that formed hardboard material.
Manufactured at GE Coshocton (Ohio,) probably before 1985.
I've cut to size, loaded unloaded orders of that stuff and those 2 registration holes I've drilled with a hand press likely 50k of them, and mylar for the registration also cut drilled and pinned, etched, tested, tin dipped "lead free", drilled, routed, and multilayered pressed and plated so I've done decades with this shit including making the laquered interior material for a time.
I've cut to size, loaded unloaded orders of that stuff and those 2 registration holes I've drilled with a hand press likely 50k of them, and mylar for the registration also cut drilled and pinned, etched, tested, tin dipped "lead free", drilled, routed, and multilayered pressed and plated so I've done decades with this shit including making the laquered interior material for a time.
Important to learn these old techniques. I have this feeling that we will be revisiting them.
Important to learn these old techniques. I have this feeling that we will be revisiting them.
I have a few pieces with that same marking, no joke.
I have a few pieces with that same marking, no joke.
Yeah, the Coshocton plant produced a phenomenonal amount of circuit board in it's day. I have an Atari Heavy Six that has this type of board.
Yeah, the Coshocton plant produced a phenomenonal amount of circuit board in it's day. I have an Atari Heavy Six that has this type of board.
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