reducing pinholing( was Re: PCB cleaning method)
2004-11-05 by Phil
Hmmm, I use a copier on as dark a setting as I can (i.e. lots of toner) and make 20 passes through the laminator. I think I m at the point of diminishing
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Re: [Homebrew_PCBs] Electro-Etching
2004-11-05 by Thomas
sounds good, or have I missed something here ... what about the unconnected copper area s of the board ? I am thinking that the unconnected copper would need a
Re: [Homebrew_PCBs] Electro-Etching
2004-11-05 by Earl T. Hackett, Jr.
I d like to hear some of the details about your electro etching process. We considered this many years ago, but could never get it to work to the degree
Electro-Etching
2004-11-05 by Gary
Just in case any are interested, I Electro-etch most boards. (Reverse Electroplating) Than just a bit of Ferric Chloride to finish them off at the end as it is
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Stefan Trethan
... look forward to it. That copper ring around the holes is very narrow, unless you have throughhole plating you ll have a hard time drilling and soldering,
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Manuel Bessler
... OK, here are a few more shots: http://cockpit.varxec.net/tmp/s_img_2704.jpg The board after removing the paper under running water. You can see two areas
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Earl T. Hackett, Jr.
This may be an anti tarnish compound. Many anti tarnish compounds contain amines that form very strong bonds to copper and often act as a base for adhering
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by lists
In article , ... Brasso, like all common metal cleaning products, contains a polish which will leave a film on the copper. Whether
Re: PCB cleaning method
2004-11-04 by RMustakos
After much thinking for an old brain, I remember that we used something like this (sometimes instead of Brasso) to clean the brass for our uniforms. I guess
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Manuel Bessler
On Thu, 04 Nov 2004 19:40:31 -0000 ... It does very well on large copper areas. That particular board had only a few traces, and the rest was all copper pour.
TT track seems to thin where it enters pad
2004-11-04 by Stefan Trethan
Hi Sometimes i observe the track to get thinner just where it attaches to the pad, maybe the last 2mm, gradually. Not often, but sometimes. It seems to be
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Stefan Trethan
... same thinking here. reduce pinholes: use thinner paper (and no carrier sheet) makes the printer apply more toner. second run through the laminator tends to
Re: PCB cleaning method
2004-11-04 by Phil
it is possible that the film this stuff leaves is some how binding to the toner. How does it do on large areas of copper? I m always looking for ways to
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Manuel Bessler
On Thu, 04 Nov 2004 06:57:43 +0100 ... I don t think we cleaned it with solvent afterwards, AFAIR we just rubbed the film of that stuff off with Kleenex
Re: [Homebrew_PCBs] Re: PCB cleaning method
2004-11-04 by Stefan Trethan
... Did you clean the board with solvent after nevr dull? It is said it leaves a coating. I am surprised the toner sticks to it, i expect it to be similar to
Re: PCB cleaning method
2004-11-04 by Manuel Bessler
OK, I ve uploaded two pictures to my website showing the results of Nevr-Dull as a PCB cleaning aid: http://cockpit.varxec.net/tmp/img2688.jpg
Re: [Homebrew_PCBs] Re: Free PCB layout program.
2004-11-03 by John Kent
Sorry forgot to mention you can make up your own components for the library, Just do it the same as you would a normal PCB layout (pads, tracks and artwork) ..
Re: [Homebrew_PCBs] Re: Free PCB layout program.
2004-11-03 by John Kent
Please remember I do not speak French, but here is what I think it says ... Fichier Files Edition Edit Affichage
Re: [Homebrew_PCBs] Re: Free PCB layout program.
2004-11-03 by John Kent
Hi Chaps. As requested replying via the list. No I haven t had any hang-ups at all, most of my problems came from an inability to speak French. However it is
Re: Free PCB layout program.
2004-11-03 by Steve
... Please keep discussion on the list. It s kind of arrogant to expect others to help just you and no one else, if you can t be bothered to come back to the
Re: Free PCB layout program.
2004-11-03 by chemelec
I Just Installed that program and It looks Great. But I get the Occassional LOCKUP when I move a Pad out of Area. Do you get that problem? I also still need to
Re: [Homebrew_PCBs] PCB cleaning method
2004-11-03 by Stefan Trethan
found it, sorry, didn t notice the missing e. ST
Re: [Homebrew_PCBs] PCB cleaning method
2004-11-03 by Stefan Trethan
... would be great if you can post german sources. can t find at ebay.de thanks st
PCB cleaning method
2004-11-03 by Manuel Bessler
Hi group, A friend of mine stumbled upon a great method for PCB / copper clad cleaning before doing toner transfer. Nevr-Dull (www.nevr-dull.com) magic
Re: [Homebrew_PCBs] Did you see the epson press release? Inkjet PCB!
2004-11-02 by Ted Huntington
Epson leads the way in inkjet printers. I think they are the best and most dependible I have ever used (although I have only used a few). They are also the
Re: [Homebrew_PCBs] Did you see the epson press release? Inkjet PCB!
2004-11-02 by Earl T. Hackett, Jr.
Somebody finally did it. It sure took long enough. I suggested this approach over 15 years ago when I was in the duPont electronics department. Of course I
Re: Did you see the epson press release? Inkjet PCB!
2004-11-02 by Phil
That is very interesting although it looks like a technology announcement with no product mentioned. I suspect that it will be a while before this becomes
Did you see the epson press release? Inkjet PCB!
2004-11-02 by thespeakerguy
http://www.epson.co.jp/e/newsroom/news_2004_11_01.htm This prints conductors and insulating layers in subsequent passes. Time will tell if this is viable and
Re: Double sided boards, Help needed.
2004-11-02 by Phil
By lining up, I assume you mean aligning the two pieces of paper that have the transfer patterns printed on them. I use 24 lb paper for printing the toner on
File - monthly.txt
2004-11-02 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line
Re: [Homebrew_PCBs] Slow etching, Sodium Persulfate?
2004-11-01 by Tony Magon
I suspect that the water you used was not hot enough . I had the same problem recently - I tried hot water out of the tap but it would not etch. so I then used
Re: [Homebrew_PCBs] Slow etching, Sodium Persulfate?
2004-11-01 by Earl T. Hackett, Jr.
Sodium persulfate is a rather slow etchant, but it produces a very clean surface. We used to use it as the basis for a chemical clean line prior to laminating
Double sided boards, Help needed.
2004-11-01 by ginettaman2001
Any help or tips on etching double sided boards? I want to etch a double sided board, nothing to complicated. I have etched before using laser transfer method
Re: [Homebrew_PCBs] Slow etching, Sodium Persulfate?
2004-11-01 by Adam Seychell
... 0.8 dl would be 0.8 deciliters = 0.08 liters = 80 milliliters Is that correct ? Normal makeup concentration of ammonium persulfate etchant is 100 to 200
RE: [Homebrew_PCBs] Slow etching, Sodium Persulfate?
2004-11-01 by Leon Heller
... When I ve used ammonium persulpate it had to be warm to work properly. Leon -- Leon Heller, G1HSM Tel: +44 1424 423947 Email: aqzf13 at dsl dot pipex dot
Slow etching, Sodium Persulfate?
2004-11-01 by P.O.
Does anyone use sodium persulfate as etchant? I m makeing my first pcb using toner transfer from kodak-paper. But the etchant doesn t work very well. I use
Re: Ivex WinDraft & WinBoard going out of business sale
2004-11-01 by sciciora
... Why am I not suprised...
Re: Canadian "picture paper" at Staples?
2004-10-30 by grantfair2001
Dennis - I will look at other stores for it. Thanks for your reply. Grant
Re: Muicrofiche reader
2004-10-29 by Dave Mucha
... this ... it. ... it, ... not ... Speakers ? Mine are still in the box. I don t need my puter to talk to me, I talk to myself enough already !
Re: Muicrofiche reader
2004-10-29 by Phil
That s funny... I appropriated my kids Intel Microscope for just this purpose. The 10X pictures I posted several times were take with it. Not a bad little
Re: [Homebrew_PCBs] Re: Muicrofiche reader
2004-10-29 by Thomas
any idea of the magnification on the lense, I remember some fiche readers had several lense s with different Mag Thomas ... From: Dave Mucha To:
Re: Muicrofiche reader
2004-10-29 by Dave Mucha
... Neat idea. Seems e-bay has the body of the microscope for $9.99. Dave
Re: Free PCB layout program.
2004-10-29 by Dave Mucha
Hi John, go to the yahoo list on the web and under the links section, add the link and some comments. We get people asking every couple months what is
Finally found a good TT paper!
2004-10-29 by Philip Pemberton
Hi, I ve tracked down some photo paper that seems to work quite well for toner transfer. It s Staples own-brand 130gsm Inkjet GLOSS paper, bright white . 20
Re: [Homebrew_PCBs] Muicrofiche reader
2004-10-29 by Brian Pitt
... you could strip it down to the XY stage and add one of these http://www.jdr.com/interact/item.asp?itemno=MICROSCOPE just an idea :) Brian
Ivex WinDraft & WinBoard going out of business sale
2004-10-29 by Dick Ballard
The Ivex Design International web site is offering fire sale deals on its software, indicating that it has ceased normal business operations as of 9/30/04.
Re: [Homebrew_PCBs] Canadian "picture paper" at Staples?
2004-10-28 by Philip Pemberton
In message ... I think I may have tracked the stuff down. It s listed as Staples Glossy Inkjet Paper A4, 130gsm, white ,
Re: [Homebrew_PCBs] Re: Free PCB layout program.
2004-10-28 by John Kent
Thanks for the reply Dave. I have just solved the Gerber problem so everything is OK now. I needed to see the structure of the Gerber file to work out what
Re: [Homebrew_PCBs] Re: Free PCB layout program.
2004-10-28 by John Kent
I think the answer has to be that I have tried lots of them and prefer this one Hi!. Actually I solved the Gerber problem after I posted the question, so I am
Re: Free PCB layout program.
2004-10-28 by Dave
... I really like the Protel Easytrax program: http://www.protel.com/downloads/ http://www.xs4all.nl/~pa0nhc/ibmeasycad.htm Dave