RE: [Homebrew_PCBs] Re: more experiments with Toner transfer by etching the boards first [1 Attachment]
2016-01-26 by Boman33
I too like DJ’s test charts. For quick visual testing take a look at: http://vinland.com/USAF-1951.html It includes besides horizontal and vertical lines, lines that are slightly angled which is the worst case. There is also a standard resolution test chart. Bertho _____________________________________________
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From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Monday, January 25, 2016 23:08 To: Homebrew_PCBs@yahoogroups.com Subject: RE: [Homebrew_PCBs] Re: more experiments with Toner transfer by etching the boards first [1 Attachment] DJ has excellent test artwork of traces 15 mil to 1 mil (.38mm to 0.025mm) in pdf, png, and gerbers. http://www.delorie.com/pcb/spirals/ From: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com> [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Monday, January 25, 2016 6:11 PM To: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com> Subject: RE: [Homebrew_PCBs] Re: more experiments with Toner transfer by etching the boards first -------------------------------------------- On Sun, 1/24/16, mistuff@austin.rr.com <mailto:mistuff@...> [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com> > wrote: Subject: RE: [Homebrew_PCBs] Re: more experiments with Toner transfer by etching the boards first To: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com> Date: Sunday, January 24, 2016, 9:16 AM Good information. I have tried many times to get thermal transfer to work with a Brother printer, but it seems the toner just does not want to melt like some other printers apparently do. I will try laquer thinner next time I make a board. I did see a post that pre-etching the board a few seconds helps with adhesion. Bob (pure) = shortcut notation that I did not modify it by adding anything else. It is "acetone" (bought in Homedepot paint department. It is not "nail polish remover" which most likely contains acetone but my also have other stuff in it. I printed some text on a sheet of paper using the Brothers printer. I then deposited (in different spots) acetone, Isopropal alcohol, Methal alcohol, MEK, Naptha, and Laquer thinner. At each spot, I put a blank piece of paper and held it for about a minute. The Laquer thinner location was the only spot in which there was actually a transfer of print on to the blank paper. I didn't perform any other test because I'm busy with other stuff right now and I'm not experienced in using the chemical transfer process. That is why I suggested that someone already doing chemical transfer (and having a Brothers printer) give this a try on PCB and tell us the results. I have no idea how well this transfer would stick to PCB for etching. #yiv1387003446 #yiv1387003446 --