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- Newsgroups: sci.electronics
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!att!linac!pacific.mps.ohio-state.edu!cis.ohio-state.edu!chocktaw.cis.ohio-state.edu!rubin
- From: rubin@chocktaw.cis.ohio-state.edu (Daniel Rubin)
- Subject: Re: Success! Resist Pen Works in HP Plotter!
- Message-ID: <1992Aug30.171841.3252@cis.ohio-state.edu>
- Keywords: resist pens, pcb, etching
- Sender: news@cis.ohio-state.edu (NETnews )
- Organization: The Ohio State University Dept. of Computer and Info. Science
- References: <78655@ut-emx.uucp>
- Date: Sun, 30 Aug 1992 17:18:41 GMT
- Lines: 29
-
- >David thinks of a neat idea for a circuit, but is too *@#$ lazy
- >to draw up a circuit pattern, make a mask, perform the usual
- >photolithography, and etch the board.
- >So, he says, "Why not just put a resist pen in my plotter, and
- >have the silly computer plot my patterns directly on the copper
- >clad pc board? Then I can plunk it in some ferric chloride and etch
- >it right away!"
- >Alas, there are two fundamental problems:
-
- Can the HP plotter correctly position a copper clad board? I did not
- know that it could handle material that thick. If so this sounds like
- a much better route to take than messing with transfer sheets!
-
- >"I'll use the old HP 7470A plotter. There is NO CAROUSEL anyway, just
- >two pen holding bays (one on the left, one on the right) which are
- >easily accessable; this plotter works with the cover raised, so there is
-
- How much can you find this plotter for now? I assume they don't make it
- anymore. I would think with a little more effort the ink of a regular
- HP plotter pen could be replaced with the ink of the pen you had described.
- This would allow the use of just about any plotter. You may even be able
- to machine your own pens out of rod aluminum stock!
-
- - Dan
- --
- Daniel Joseph Rubin | "...A good football team for the alumni, parking
- rubin@cis.ohio-state.edu | for the faculty and sex for the students."
- GO GO | - President E. Gordon Gee on the three things that
- BENGALS BUCKEYES | a great university president must provide.....
-