File - monthly.txt
2012-12-02 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
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Cupric Chloride Fumes
2012-12-01 by bruce_fleming
Hi all. I am new to this forum and am working on etching. The ferric chloride has been tried a few times. While searching for better ways to etch using ferric
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-30 by DJ Delorie
... I ve tried both the Pulsar paper and transparencies.
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-30 by DJ Delorie
... If you re viewing my messages in a web browser instead of mail, replace .jpg with .html to get the image. I had a lot of problems with people using my
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by John Anhalt
Thanks, that is a nice review. An important point, which the review also mentions, is the difference between paints and reactive precipitates. In reactive
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by John
Advances in Conductive Inks across Multiple Applications and Deposition Platforms http://www.ipcoutlook.org/pdf/advances_conductive_inks_ipc.pdf No access
Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by John Anhalt
One thing to consider about plating holes, so far as I know, is that the plating in commercial processes is generally done before circuit etching. Otherwise,
Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by Howard Chester
Conductive Ink;- I remember reading of a conductive ink for THP made from Indian ink and Grapite power mixed together to form a gummy solution. The Graphite
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by John
OK already seen your reply to others. John From: John Sent: Friday, November 30, 2012 7:51 AM To: Homebrew_PCBs@yahoogroups.com ; smilingcat@earthlink.net
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by John
I d be interested in some details on how you are going to do the through hole plating. Thanks John From: smilingcat90254 Sent: Thursday, November 29, 2012
Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by smilingcat90254
The ink I m using is Higgins black magic. Says its waterproof after it dries and it IS. The minimum hole size I currently have are 20mils in diameter. some are
RE: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by Jeff Heiss
How are you getting the charcoal/ink mix into the holes? What size holes are you using? Jeff _____ From: Homebrew_PCBs@yahoogroups.com
Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by smilingcat90254
I ve ground up artist s charcoal using 400 grit or 800 grit sharpening stone then add the powdered charcoal into india ink based on some polymer. I checked to
RE: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by Jeff Heiss
What are you using for through-hole activation? Jeff _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of
Re: Want to plate drill holes for your double sided PCB's
2012-11-30 by AlienRelics
Oops. There should be a nonspecific gender version of he/she/his/hers for the internet. Steve Greenfield AE7HD
Re: Want to plate drill holes for your double sided PCB's
2012-11-29 by smilingcat90254
Oh someone wanted to know what am I plating? I was going to plate my drilled out hole with copper so that on double sided PC, i m not having to stick a piece
Re: Want to plate drill holes for your double sided PCB's
2012-11-29 by smilingcat90254
I ve also posted here as well. BTW, Steve I m a gurrrlll. See it under Files/CONSTANT CURRENT SOURCE in this group. Sincerely, Ms. Smilingcat KI6YMF ;)
Re: Want to plate drill holes for your double sided PCB's
2012-11-29 by AlienRelics
He has posted a PNG of the schematic on the Electronics_101 Files area:
Re: [Homebrew_PCBs] Want to plate drill holes for your double sided PCB's
2012-11-29 by Vicent Colomar Prats
Me too, interested in that design. 2012/11/29 Kevin Byrne ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Want to plate drill holes for your double sided PCB's
2012-11-29 by Kevin Byrne
I would also like to see your design. Is it posted yet? Kevin ________________________________ From: Rick Sparber To:
RE: [Homebrew_PCBs] Want to plate drill holes for your double sided PCB's
2012-11-29 by Rick Sparber
I ll certainly enjoy studying it. Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of smilingcat90254 Sent:
RE: [Homebrew_PCBs] Want to plate drill holes for your double sided PCB's
2012-11-29 by Jeff Heiss
What are you plating to the board? Tin, copper to copper, via holes? Jeff _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On
Re: [Homebrew_PCBs] Want to plate drill holes for your double sided PCB's
2012-11-29 by Randall Morgan
I d love to see your design! On Wed, Nov 28, 2012 at 8:15 PM, smilingcat90254 ... -- If you ask me if it can be done. The answer is YES, it can always be done.
Want to plate drill holes for your double sided PCB's
2012-11-29 by smilingcat90254
I just posted on electronics-101 with an offer to post a constant current source design and theory of operation for use in plating PCBs. If anyone is
Re: [Homebrew_PCBs] Re: Pcb to G code
2012-11-26 by Randall Morgan
Make sure your files begin and end with a percent symbol i.e: % or it is not valid cnc code. If you can show me the file I have some experience with Mach2/3,
RE: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-26 by MIKE DURKIN
Now that iv got a working 1700n laser printer ... I was planning on swiping a 4 square of vinyl from my wifes silhouette ... and probably print an image of a
RE: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-26 by Rick Sparber
I ve had good luck doing toner transfer with kitchen parchment paper. Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On
RE: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-26 by MIKE DURKIN
Works for me too ... Was the toner transfer with paper or vinyl ? Mike KC7NOA ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-25 by jeremy youngs
i had no problems with the links try a different browser On Sun, Nov 25, 2012 at 5:33 PM, Malcolm Parker-Lisberg
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-25 by Andrew Hakman
They work fine for me On Sun, Nov 25, 2012 at 3:33 PM, Malcolm Parker-Lisberg
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-25 by Malcolm Parker-Lisberg
Your links don t work as your site says don t hot link when you click on them! Malcolm I don t suffer from insanity I enjoy it! Mene, mene, tekel, upharsin
Re: [Homebrew_PCBs] Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-25 by DJ Delorie
I have no problem doing 0.5mm pitch ICs with UV films and an Epson R280 (2880 dpi) inkjet printer, although I use the jetstar films and custom printing
RE: [Homebrew_PCBs] success!
2012-11-25 by Rick Sparber
Howard, What you say is especially true since one of the labs I teach is etching a circuit board. Letting the students see the progress helps maintain their
Re: Good place to get PCB drill bits?
2012-11-25 by ftkalcevic
I second that. I ve always bought from drill bit city. Hard to beat the price for new bits (eg new 0.8mm, pack of 5, $8.15). I always get packs of 5 or 10
Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Dave Sage
David: I see your little gripe about top posting. I would just like to point out that I subscribe to the daily digest of the forum and when I Reply to Group
Need comparing methods for smaller IC's (0.35mm pads and 0.15mm interpads area)
2012-11-25 by Hikmet
http://img713.imageshack.us/img713/8166/mpuw.jpg Hi , i want to make my pcb s for small mem s sensors. Which method is more precise for these dimensions.
Re: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Russell Shaw
... Just keep etching PCBs until the etching time takes more than 15mins. Add HCl acid (and water if it seems too viscous). If that doesn t help, you ll have
Re: [Homebrew_PCBs] success!
2012-11-25 by StoneTool
Rick: Results are all that matter............. There is a good case for being able to view the progress of the etching as you can do with the glass tray
RE: [Homebrew_PCBs] success!
2012-11-25 by Rick Sparber
Mitch, It reminds me of the line from Douglas Adam s about the man that thought he was going blind but was just wearing a hat a few sizes too big ;-) Yes, feed
RE: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Rick Sparber
John, My chemistry is pathetic but I do appreciate the practical advice ;-) Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
RE: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Rick Sparber
Would that be a blank piece of board or with some test pattern on it? Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On
RE: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by David Griffith
... A better model would be a 1cm square of scrap pcb material. -- David Griffith dgriffi@cs.csubak.edu A: Because it fouls the order in which people normally
RE: [Homebrew_PCBs] first step into convection etching
2012-11-25 by Rick Sparber
John, I think I have a good process now. I made 4 1 square samples to verify repeatability. The root cause of my problem was inadequate exposure time. What a
RE: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Rick Sparber
Smilingcat, I added a small amount of baking soda to the ferric chloride so it would not bubble over the container. Then came back in a few hours and repeated
RE: [Homebrew_PCBs] Re: Ratio of Ferric Chloride to copper?
2012-11-25 by Rick Sparber
I was looking for a rough estimate. We were starting with fresh ferric chloride for each 3 x 4 board and now see that it was not necessary. Maybe a better
Re: Good place to get PCB drill bits?
2012-11-25 by tda7000
After finding no decent source for these in my country I bought some from here: http://stores.ebay.com/CARBIDE-PLUS and am very happy.
RE: [Homebrew_PCBs] success!
2012-11-24 by Rick Sparber
Jeff, The artwork is not all that fine. You can see it at http://rick.sparber.org/LEEF_Model_2.pdf page 26. Component placement is on page 25. Rick ... From:
RE: [Homebrew_PCBs] success!
2012-11-24 by Rick Sparber
Howard, With an etch time under 10 minutes and clean results, I m happy with this simple approach. Rick ... From: Homebrew_PCBs@yahoogroups.com
RE: [Homebrew_PCBs] Re: gerber file
2012-11-24 by Boman33
If the PDF files are high enough resolution and accuracy they possibly could be used directly for etching a PCB if scaled as required. In that case the only
Re: gerber file
2012-11-24 by David
Hi, If I understand you correctly, is it only Pdf files you have? this being the case, I dont think there is any software that can make gerber files from