Is it possible that some of those vintage green boards were epoxy glass and not phenolic? My impression of it always has been that epoxy glass is a much more durable and high quality material, where as the phenolic tends to be brittle and cheap. > > >---- Original Message ---- >From: Homebrew_PCBs@yahoogroups.com >To: Homebrew_PCBs@yahoogroups.com >Subject: RE: [POSSIBLE SPAM] RE: [Homebrew_PCBs] Dyeing PCBs for a >vintage look >Date: Wed, 16 Nov 2016 05:33:29 -0800 > >>Back then we just went to a stationary store that made them. >Nowadays I use >>a laser engraver to make stamps. The "natural" boards we dyed were >just >>translucent, maybe just slightly off white. >> >>On Nov 15, 2016 8:27 PM, "'Brad' unclefalter@... >[Homebrew_PCBs]" < >>Homebrew_PCBs@yahoogroups.com> wrote: >> >>> >>> >>> I was wondering about emulating the board house markings.. thatd >really >>> help with both my TVT and Mark-8 clones. How did you go about >having the >>> stamp made? >>> >>> >>> >>> So you dyed the PCBs yourselves? Ive tried making enquiries with >board >>> houses about getting the right color material made but they just >look at me >>> funny or the samples they send end up being way off. I dont know >why its >>> so hard to produce a shade of green that was literally everywhere >in the >>> mid-70s. Im told that shade was considered natural. >>> >>> >>> >>> *From:* Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@ >>> yahoogroups.com] >>> *Sent:* Tuesday, November 15, 2016 10:11 AM >>> *To:* Homebrew_PCBs@yahoogroups.com >>> *Subject:* Re: [Homebrew_PCBs] Dyeing PCBs for a vintage look >>> >>> >>> >>> >>> >>> I had to replicate some boards in some gambling machines once. It >had to >>> look exactly like the original for legal reasons. We had to order >dyable >>> pcbs, get capacitors of the same color, etc. and make some rubber >stamps to >>> emulate the old board house markings(in japanese no less) on the >phenolic. >>> They were close enough to match an old photo, but right next to an >original >>> you could tell right away. The board house was pretty funny when >we asked >>> for unplated through holes and no tin/nickel plating. For a lot >more money >>> the board house would've made the raw boards the exact color and >silkscreen >>> the fiberglass before the copper. >>> Good luck to you and let us know how it turns out. >>> >>> >>> >>> On Nov 15, 2016 9:41 AM, "Dwayne Reid dwayner@... >>> [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com> wrote: >>> >>> >>> >>> Many of the old PCBs were made with phenolic PCB material. The >color >>> varies between brown to various shades of beige. >>> >>> You can still purchase bare (blank) copper-clad phenolic PCB >material. >>> >>> Another characteristic of old PCBs is that the layout is often >done by >>> hand, using crepe dots and crepe tape in various widths. Even >earlier >>> layouts were strictly hand-drawn - no tape or dots. >>> >>> dwayne >>> >>> >>> At 01:08 PM 11/12/2016, 'Brad' unclefalter@... >[Homebrew_PCBs] wrote: >>> >>> Hey guys, >>> >>> I have recently heard of some methods of dyeing PCBs to achieve >>> coloration closer to what vintage PCB stock looked like. Im >wondering if >>> any of you have experience on this, what works, etc. >>> >>> I recently acquired some original, untouched Mark-8 computer >boards: >>> http://bradhodge.ca/blog/?p=826 >>> >>> Im hoping to use them to help create replicas. But I just cant >get the >>> PCB to look the way I want. They look too modern. Ive heard >dyeing can >>> help, and that one can even fake the fab house marks somehow. >>> >>> Im surprised there isnt a stock of vintage copper clad out there >>> somewhere. Seems to be vintage everything else these days in >electronics.. >>> >>> Brad >>> >>> >>> >>> -- >>> >>> Dwayne Reid <dwayner@...> >>> >>> Trinity Electronics Systems Ltd Edmonton, AB, CANADA >>> >>> 780-489-3199 voice 780-487-6397 fax 888-489-3199 Toll Free >>> >>> www.trinity-electronics.com >>> >>> Custom Electronics Design and Manufacturing >>> >>> >>> >> $4.95/mo. National Dialup, Anti-Spam, Anti-Virus, 5mb personal web space. 5x faster dialup for only $9.95/mo. No contracts, No fees, No Kidding! See http://www.All2Easy.net for more details!
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RE: Dyeing PCBs for a vintage look
2016-11-16 by chuck richards