Hi, Don't you now any links to sites that explain this with pictures? and do you know where to buy equipment to do this? Thanks for the many replies :) --- In Homebrew_PCBs@y..., JanRwl@A... wrote: > In a message dated 06-Dec-01 10:10:12 Central Standard Time, > thor918@o... writes: > > > > Does anybody know how to print on top of the pcb. > > > > Thor: This is done by "silk-screening". A photographically- made "screen" > (once made only of silk, but I think, nowadays, some tougher polyester is > used?) is used as a stencil, and PAINT is "squeegied" onto the board. The > screen is liquid-tight in areas where you do NOT want the paint, and only the > "screen" (open weave of the "silk" cloth) is clear, allowing paint to squeeze > through. This is an "art" which is used in more than just PCB work! All > kinds of posters, signs, labels, etc., are made by the familiar "silk-screen" > method. > > HOWEVER! If you just MUST have some labelling on the "top" of a PCB, but > wanna make only ONE, and NOT spend all that for the frame, silk- screen stock, > developer, squeegie-tool, paint, etc., you can use IMPRESSION lettering > and/or patterns. Good art-supply stores will have more than just letters in > that stuff! You want white or maybe yellow, but NOT black, etc., as those > colors hardly show on a FR-4 board. Once you have "rubbed off" your entire > pattern, words, labels, etc., then SPRAY the top with clear enamel or > lacquer. AFTER you have etched! And be careful not to get any of that on the > "copper side"! It will look as nice as your steady hand can do that! I have > done this countless times! Also, for making "professional looking" panels! > Dial-numbers, ON/OFF, etc. Just SPRAY it after all the rubbing- off/on is > done! > > Jan Rowland
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Re: Print on top of the pcb
2001-12-08 by thor918
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