home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!usc!wupost!csus.edu!netcom.com!nagle
- From: nagle@netcom.com (John Nagle)
- Subject: Re: Why etch? Is copper deposition possible?
- Message-ID: <1993Jan11.042713.22627@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <C0nqAB.55B@gantz.bowlgreen.oh.us>
- Date: Mon, 11 Jan 1993 04:27:13 GMT
- Lines: 32
-
- gantzm@gantz.bowlgreen.oh.us (Michael L. Gantz) writes:
- >I have been reading all the articles concerning the etching of circuit
- >boards, something I have a great need to do. And they all assume that
- >one would be etching the copper off of the board. Is it possible for
- >the home hobbyist to devise a system to deposit copper onto blank
- >boards?
-
- >After the circuit images have been developed the board would then be
- >treated either chemically or electrically to bond copper to the traces
- >developed on the board. The might solve the problem of plated through
- >holes as they might get coated also.
-
- The process by which boards get "plated through" holes could
- in theory do something like this, but that process is substantially
- more complex than regular board etching. Home board etching is
- common; I've never heard of someone doing plated through holes at
- home.
-
- There are pens for "writing" conductive ink onto blank boards,
- but this is more of a tool for making minor changes, not a way of doing
- whole boards.
-
- Right now, board houses are so hungry for work that discounts
- can be negotiated and delivery is really good. And the quality is far
- better than you can do at home. If you're doing anything fancier than
- single-sided boards, go with a commercial PC board fab house. Single-sided
- boards you can do yourself, if you're so inclined. If you have to do it
- on the cheap, design a single-sided board, using wire jumpers when you
- have to cross traces, don't try to put more than one trace between
- IC pins, and try making your own board. Worth doing once in your life.
-
- John Nagle
-