Re: Toner transfer - un-even surface theory...
2006-03-02 by soffee83
Chris, Funny, I ve suspected that a while back myself. Mine was actually more noticeable with doing back-side label transfers on some white single-sided
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Re: Double sided vs single sided fr4
2006-03-02 by derekhawkins
... Google vaseline etchant
Re: [Homebrew_PCBs] Double sided vs single sided fr4
2006-03-02 by JanRwl@AOL.COM
In a message dated 3/2/2006 8:37:50 A.M. Central Standard Time, sbdwag@voyager.net writes: how I could cover the top side without putting a resist layer on it
Re: Toner transfer - un-even surface theory...
2006-03-02 by lcdpublishing
Hi Stefan, Answers to your questions... I am still using the iron method - that fuser I got from my friend was a dead one. I suspect that the copper is an
Re: Copper surface quality for applying the resist
2006-03-02 by fenrir_co
... I ... before ... places ... I ... I mentioned this in another post I just replied to but I ll add it here to yours: I suggest getting 1000 grit sandpaper
Re: Double sided vs single sided fr4
2006-03-02 by fenrir_co
... have ... etch. ... etching. ... single ... As someone else suggested, you could just let the etchant eat the copper off the other side, thus preventing
Re: Toner transfer - un-even surface theory...
2006-03-02 by fenrir_co
... It s been mentioned before, but I ll say it again: there is no way to consitantly get perfect transfers with an iron. I would blame the un-evenness of the
Re: Double sided vs single sided fr4
2006-03-02 by derekhawkins
... It s easier to just etch the whole board as one would a single sided board. All copper will be removed from the unwanted side. Business as usual for TT.
Re: first board and etchant disposal
2006-03-02 by coitmusic
Alan, Thanks for the encouragement! Drilling went fine...I got the CEM boards so I wouldn t have to invest in a new drill press and carbide bits (maybe next
Re: [Homebrew_PCBs] Toner transfer - un-even surface theory...
2006-03-02 by Stefan Trethan
On Thu, 02 Mar 2006 16:24:08 +0100, lcdpublishing ... You are seeing the glass fabric of the PCB. This is normal, and varies between PCB brands. What do you
Re: Double sided vs single sided fr4
2006-03-02 by Chris Horne
Correct me if I m wrong folks, but using a double sided board for a single sided circuit would mean at the very least etching around all the drill holes to
Re: Toner transfer - un-even surface theory...
2006-03-02 by dl5012
Hi Chris, ... I ve been using a green Scotch Brite type of scrubber for decades and that has worked fine for me. I ve used ruby tape (red adhesive tape),
Toner transfer - un-even surface theory...
2006-03-02 by lcdpublishing
Hi Guys, I etched a board the other day using some new PCB material I got. I did the usual cleaning and polishing process that has been working good for me.
Re: first board and etchant disposal
2006-03-02 by protonceksleeperman
Did you go and ask for H2O2 in some store where the sell paints or chemicals? I ve got mine at paint store. I use 30% HCl and 30% H2O2, then i add some water,
Re: first board and etchant disposal
2006-03-02 by Bob_xyz
... they ... days. I ... of course) ... Beauty supply stores sell quarts of liquid H2O2 in 20, 30, and 40 volume strengths. These correspond to 6%, 9%, and
Copper surface quality for applying the resist
2006-03-02 by sbdwag
Ive heard a few different opinions about the finish of the copper surface before etching. One theory suggest that its better to have the surface slighly rough
Re: [Homebrew_PCBs] Double sided vs single sided fr4
2006-03-02 by Leon Heller
... From: sbdwag To: Sent: Thursday, March 02, 2006 2:36 PM Subject: [Homebrew_PCBs] Double sided vs
Re: [Homebrew_PCBs] Re: first board and etchant disposal
2006-03-02 by Leon Heller
... From: alan00463 To: Sent: Thursday, March 02, 2006 2:23 PM Subject: [Homebrew_PCBs] Re: first board
Double sided vs single sided fr4
2006-03-02 by sbdwag
Im getting ready to order some double sided FR-4 from abcfab and have a question. Right now I do not plan on making very many double sided boards. Its more
Re: first board and etchant disposal
2006-03-02 by alan00463
That s great news, Chester! I m glad you achieved success on your first try. I am planning to do my first board ASAP. I m also planning to use muriatic acid
Revitalizing etchants
2006-03-02 by ST de Feber
Dear All, I am using Amonium Persulfaat or Natrium Persulfaat as etchant. However, it is degrading a bit. Does any one know how to revitalize it ? I know that
first board and etchant disposal
2006-03-01 by coitmusic
Yeeha! Etched my first board today and it looks great so far! I haven t drilled it yet, but I m very happy with it. Details: Samsung scx-4100 printer glossy
File - monthly.txt
2006-03-01 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] Place to have small quantity board made for others to buy
2006-02-28 by Henry Carl Ott
... Cute, Too bad I switched to AVRs years ago. It s a real small board, I d think they could do a bunch on a single sheet, and just knock them out. But in all
RE: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Brian Schmalz
Carl, Thanks for the interest - it s a very small USB PIC based development board - sort of like a Basic Stamp in that it sits down in a breadboard. Example
RE: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Henry Carl Ott
... Sparfun Electronics (SFE) IS pretty cool. They stock a few breakout and prototype boards. Coincidentally enough, quite a few of them are olimex boards.
Re: Place to have small quantity board made for others to buy
2006-02-28 by Bengt
... And arn´t they picky about the specifications list for manufacturing, been there and got some boards with to small holes. It is as you say *finished hole
Re: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Codesuidae
Olimex stocks a number of different boards (microcontroller development stuff, OpenEEG project, etc), both as populated and bare boards; they might not have a
Re: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Leon Heller
... From: Codesuidae To: Sent: Tuesday, February 28, 2006 7:57 PM Subject: Re: [Homebrew_PCBs]
RE: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Brian Schmalz
Yah, they do. But I ve got 14 boards on one Olimex panel - I don t think anybody would want to buy 14 of them at once! :) *Brain ... From:
RE: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Brian Schmalz
Yah, I ve thought of SparkFun. I d be honored to be associated with those guys. I love their stuff. But they don t usually sell just blank boards, do they?
Re: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Codesuidae
Doesn t Olimex allow reorders based only on the original order number? Maybe you could publish the order number and allow others to simply order whatever
[Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Henry Carl Ott
... It s a commercial outfit, but pretty friendly to the hobby circuit. Depending on the type of project (micro based), you may want to offer it to sparkfun:
Re: [Homebrew_PCBs] Place to have small quantity board made for others to buy
2006-02-28 by Leon Heller
... From: Brian Schmalz To: Sent: Tuesday, February 28, 2006 7:25 PM Subject: [Homebrew_PCBs] Place to
Place to have small quantity board made for others to buy
2006-02-28 by Brian Schmalz
OK, I m not trying to go way off-topic here, but I don t know who else to ask about this. I have a small board that I have designed (and built many of by hand
Re: Success using Press-n-Peel and H202 HCL etch
2006-02-28 by sbdwag
... Richard Thank you very much for the Invaluable information. I will definatly keep my eyes out on ebay for a unit such as you describe. Regards Wag
Re: Success using Press-n-Peel and H202 HCL etch
2006-02-28 by Richard
Thanks for the good report. As others mentioned, you might try thermal-relief pad styles. And get a higher-power iron with internal temp feedback. It is a
Re: Protel newbie
2006-02-28 by Len Warner
... Rather than have us hand-craft your own personal wheel, would the following general advice help? (Plus your natural ingenuity, of course.)
Protel newbie
2006-02-27 by Shabi Hashmi
Hi there, I wanted to create a footprint for 28-Lead TSSOP using Protel 99 SE. Please let me know step by step method as I am new to this software. Thanks,
Re: [Homebrew_PCBs] super small, high noise mixed singal 2 sided PCB design questions
2006-02-27 by Jan Kok
This online (recorded) seminar may be helpful: at http://www.analog.com/onlineseminars see A Practical Guide to High-Speed Printed-Circuit-Board Layout.
Re: [Homebrew_PCBs] super small, high noise mixed singal 2 sided PCB design questions
2006-02-27 by Stefan Trethan
I d connect them close to where the power comes in, using a star ground approach. Sometimes other places are better, like the point where the signals using the
super small, high noise mixed singal 2 sided PCB design questions
2006-02-27 by J
Hello, I m designing a VERY small board (less than 1 square inch) and there is an analog part and a digital part. The board is going to be two sided and I
Re: Photolithography - resolution (use a camera)
2006-02-25 by derekhawkins
... A camera is the way to go in this regard. While a Trinocular scope is ideal for extreme closeups, it cannot match the versatility of a camera. Example; An
Re: [Homebrew_PCBs] Re: Photolithography - resolution
2006-02-25 by Stefan Trethan
look in the archives, someone described a while ago that for him yellow produced a more UV opaque layer than black did. How opaque it is for UV might be quite
Re: Photolithography - resolution
2006-02-25 by fenrir_co
... better ... compatible ... and ... and ... epson ... because they ... is absorbed ... fast. ... can ... ones. ... when ... on ... more ... You want a
Re: [Homebrew_PCBs] Re: Photolithography - resolution
2006-02-25 by Russell Shaw
... Only if the inkjet transparency is decent stuff *and* the ink is compatible with it *and* it s not a crappy printer. If the ink is incompatible, you
Re: Board cleaning trials
2006-02-24 by wbblair3
... I looked on the Lowes.com web page, but didn t find the Aqua Mix Sulfamic Acid Crystals. I called my local store and they didn t have them either. I did
Re: Board cleaning trials
2006-02-24 by wbblair3
... That NIH link: http://householdproducts.nlm.nih.gov/ is pretty useful (for those in the US anyway since the brands listed are US brands) when one wants to
Re: [Homebrew_PCBs] Re: Photolithography - resolution
2006-02-24 by Leon Heller
... From: Vlad Krupin To: Sent: Friday, February 24, 2006 5:42 PM Subject: Re: [Homebrew_PCBs] Re:
Re: [Homebrew_PCBs] Re: Photolithography - resolution
2006-02-24 by Leon Heller
... From: Radra To: Sent: Friday, February 24, 2006 5:23 PM Subject: [Homebrew_PCBs] Re: