PCB etching with FR-2 / bakelite ?
Yann Guidon / YGDES wrote 03/29/2018 at 04:20 • 0 pointsHello !
As I dig in the vintage trend, I'm looking back in time when the brownish substrate was usual and transistors were novelties.
I have found some copper-clad bakelite, or "FR-2", but no usual PCB house would etch them (did I miss something on https://pcbshopper.com/ ?)
Am I forced to etch these boards myself ?
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Irrelevant.
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Etch away, my friend! You might want to practice on something less rare first if you aren't familiar with the process already.
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Etching is... so unpredictable and I don't have all the tools, just some lousy stuff I used "in the early days" that would spill, cool, change concentration etc... and the results are inconsistent. The costs are roughly the same as paying a fab house :-(
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Are you actually about to get ANY pcb house to accept raw materials from outside their normal supply line?
I'd expect FR2 to be pretty horribly brittle by modern machine-handling standards.
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I'm just asking around. It's mostly for vanity and the pleasure to do something silly because who in their right mind would do it ?
Sure it's brittle but there are still Chinese fabs that use it for consumer stuff...
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