Article View: sci.electronics
Article #17051Re: PC BOARD ETCHING QUESTIO
From: Thomas W. Day
Date: Tue, 12 Jan 1993 18:31
Date: Tue, 12 Jan 1993 18:31
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In article <76416@apple.apple.COM> apn@Apple.COM (Alex Novickis) writes: John Schuch) writes:>>I, to, have had this problem once in a while but have found most >>cameramen pretty darn accurate. Another thing I ALWAYS do is include>>a rule in the artwork. Something like this: >> >> |----|----|----|----|----|----| >> | | >> |<-------- 3 INCHES --------->| >> | | >> >> >With current laser photoplotting technology, WHY ?? whould you want to >do reductions ?? LP's can generate things much finer than you can >ever hope to etch.... I think that's about 4 mil traces with 4 mil >seperations. And it usually costs me under 10$ for a 10x10" film (OK, >well I do need several of them... but still) I guess I just assumed we were talking about taped PCBs. There are a lot of good reasons for taping 4X and going for reductions on the PMT, but those reasons probably vanish if you are sending a file to the repro company.
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<1993Jan7.142018.12112@phx.mcd.mot.com> <C0Iwtw.JpK@news.iastate.edu> <1993Jan10.225053.28590@phx.mcd.mot.com> <76416@apple.apple.COM>Show Full Headers
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!caen!hellgate.utah.edu!csn!tpsrd!tps.COM!thomasd From: thomasd@tps.COM (Thomas W. Day) Subject: Re: PC BOARD ETCHING QUESTIO Message-ID: <thomasd.70.726863499@tps.COM> Sender: news@tps.com (News Software) Organization: TPS References: <1993Jan7.142018.12112@phx.mcd.mot.com> <C0Iwtw.JpK@news.iastate.edu> <1993Jan10.225053.28590@phx.mcd.mot.com> <76416@apple.apple.COM> Date: Tue, 12 Jan 1993 18:31:39 GMT Lines: 21