Etch a circuit board with kitchen supplies

Re:Etch a circuit board with kitchen supplies by analog31 on Sunday November 11, 2018 @06:13PM (#18429324)

I still have one of the first circuit boards I made, sometime around 1982. I plugged my soldering iron into a Variac to run it at a lower temperature, then used it to draw with beeswax onto a piece of bare board, correcting my mistakes with a knife.

Today I just use a quick turn service, or some form of "dead bug" breadboarding.

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Re:Etch a circuit board with kitchen supplies by Mister_X on Sunday November 11, 2018 @10:03PM (#18430295)

Cool! So do I, from 1969, in my high school electronics class and it still works too.

It's for a variable audio oscillator that rises and is re-set by a micro switch.

I tuned it with a precision trim pot, to sound "like" a then new, electronic Police Siren, it was a big hit at school with all the guys.

Unfortunately, I used the case from my first Transistor Radio, which was an xmas present in 1962, a beautiful red and creme, Jupiter, 6 transistor radio, I regret cannibalizing it for the case, to this day.

Cream and white one here: https://www.radiomuseum.org/r/jupiter_6_transistor.html

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