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Homebrew PCBs

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Re: Tin eletroplating

2003-11-15 by roel_cnc

... Hi Adam i use normal car battery acid (37%) As u said on top 100gr/l i think it is then 78mL/L m i right !

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Re: PCBs without any etchant chemicals

2003-11-15 by Dave Mucha

... even ... serious ... I seem to remember the idea of copper tape as a means to let students make a fast circuit in the class in a matter of minutes. This

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Re: PCBs without any etchant chemicals

2003-11-15 by johnman_001

... Perhaps not necessarily at home yet, but I was reading in Electronic Design (a trade magazine I get at work) about Xerox working on a semiconductor

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Re: Tin eletroplating

2003-11-15 by roel_cnc

Hi, some testing done with sulfuric acid and normal solder wire as anode I uploaded a few photo s shown the huge tank and the result :))

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Re: [Homebrew_PCBs] Tin eletroplating

2003-11-14 by Adam Seychell

There are a few tin plating baths around, but the one often used for PCBs is the tin(II) sulfate sulfuric acid bath. Its a tin only plating , i.e. it cannot

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Re: [Homebrew_PCBs] Tin salts

2003-11-14 by Stefan Trethan

Now, tell me who is right? Marvin Dickens says electroplating tin chemicals are dangerous, Adam says no. I didn t think I was kidding. You know my knoweledge

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Re: PCBs without any etchant chemicals

2003-11-14 by Dave Mucha

... a mechanical router is one way. copper tape to laydown the traces is another. buying punched and etched boards is another. Those are the ones that come to

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Re: [Homebrew_PCBs] Tin salts

2003-11-14 by Adam Seychell

An acid sulfate electroplating tin bath is very safe, as it only contains sulfuric acid and tin(II) sulfate, plus some proprietary non-toxic organic plating

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Re: [Homebrew_PCBs] Tin salts

2003-11-13 by mpdickens

Wouldn t this ... Your kidding, right? The Metal Finishing Guidebook lists three formulations for immersion deposits of tin onto copper, only one formula is

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Re: [Homebrew_PCBs] Tin salts

2003-11-13 by Stefan Trethan

If you need only small sizes of boards you may hot tin them. I don t like those you certainly die within a year if you only look at this stuff safety

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Re: [Homebrew_PCBs] Re: Tin salts

2003-11-13 by Adam Seychell

In that case the MSDS (Material Safety Data Sheet) for the product should have all the hazardous information you require. I think MSDS s are required by law in

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Re: [Homebrew_PCBs] Tin salts

2003-11-13 by mpdickens

... It works. You can expect a layer of tin around 0.0003 to 0.0004 of an inch in thickness depending on the temperature of the tinning bath, how long the pcb

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