Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-06 by Markus Zingg
Stefan, Thanks for your information. Still some more questions :-) - Can you give a ratio to at least start? I mean how much HCL and H2O2 should I use for the
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Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-06 by Stefan Trethan
I can t actually give you the requested exact ratios since i built my etchant bit by bit and do not know them. However, i think you will have to do the same,
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-06 by Zoran A. Scepanovic
Hello Markus, ... Device for measuring humidity is named HyGrometer: http://en.wikipedia.org/wiki/Hygrometer ... There are no dumb questions, only dumb answers
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-06 by Markus Zingg
I would like to switch to cucl for a while cause having a solution that lasts virtually for ever seems to be very beneficial. Besides, I m just before building
laser printer recommendation ?
2009-01-06 by Paul Newman
My faithful HP 1020 is printing shadows, blotches and several versions of what I am trying to print out on the same page!!! Cleaning procedures etc have
Re: Toner Transfer Details?
2009-01-05 by flightofharmony
... Jumping in here: The best bits to use (from my experience) are the carbide bits. They are super-sharp, cut beautifully, and stay sharp MUCH longer than HSS
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Wayne Topa
... Thanks DJ. As I mentioned to Stefan, it was your post in 2006 that I followed when I was putting together my PCB junk box. I see I have all but the air
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Wayne Topa
... Actually I don t. In researching Leon s reply, which I mis-read, I went back to try to refresh my memory before I mixes the chemicals. I read a lot of
Re: [Homebrew_PCBs] Re: Toner Transfer Details?
2009-01-05 by DJ Delorie
... I find I use the #80 (13 mil) the most, because most of the holes I need are vias! I cut up some 22 gauge stranded speaker wire and de-strand it; the
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by DJ Delorie
... I should point out that I, also, keep my etchant tank in a big catch basin. I also keep the sink water running whenever I m messing with the chemicals, in
Re: Toner Transfer Details?
2009-01-05 by pgdion1
... I ve bought these in the past. They re handy for around the garage and ok for general machining but I wouldn t recommend them for PCB s. They re only HSS
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Stefan Trethan
At first i was going to say you must be mistaken, but then i remembered a few years ago i actually kept this etchant in the described bottle. You have a better
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by DJ Delorie
... I keep it in a rubbermaid container, yes, with the lid on it when not in use. There s a hole in it where the air tube goes through, so it s not 100%
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Wayne Topa
... Thanks Stefan and DJ. That is what I remember (now), that I read a few years ago. I believe that it was you fellows that got me interested in the first
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by DJ Delorie
... This is what I ended up doing - I wasn t using the HCl/H2O2 solution often enough and had to keep evaporating off water to fit in more H2O2, so one day I
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Stefan Trethan
The solution does get darker as more copper is dissolved, but slightly green doesn t mean there is anywhere near enough copper to etch a board. If you want to
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Wayne Topa
... Ah Ha, the rejuvination process, adding H2O2 before each etching session, until it becomes CuCl. Is that the stage where the solution changes color?
RE: [Homebrew_PCBs] Re: Copper Foils
2009-01-05 by Tony Smith
The stained glass people will generally disagree with you. You can solder to it on a flat surface, but perhaps not when trying to fix a edge connector - too
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by leon Heller
... From: Wayne Topa To: Sent: Monday, January 05, 2009 3:06 AM Subject: Re: [Homebrew_PCBs] Shelf
Re: Copper Foils
2009-01-05 by trevwhite74
... adhesive ... Well I have some copper laminate from LaserPCB. I does adhere to the glass but not sure how long it would last. I am wondering if maybe a
Re: [Homebrew_PCBs] Re: Copper Foils
2009-01-05 by Lez
... what about glazing silicone adhesve, cylinder head gasket silicone adhesive
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Stefan Trethan
Now there s your problem. You don t have CuCl, you have HCl and H2O2. The one will keep, the other won t. You can make CuCl from HCL and H2O2 simply by etching
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Gaurav Verma
Hi It is my understanding that H2O2 will decompose readely into H2O and O2 hence you will have to add fresh H2O2 to existing solution until the etchent becomes
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Wayne Topa
... Leon I found a bunch of Curric Chloride (HCL+H2O2) links on Answers.com that say it does keep. I even went back in my archived mail and found a message
Re: Copper Foils
2009-01-05 by mfisch2001
Stained glass copper foil adhesive will not stand up to solder temperatures on a flat surface. I tried using it to repair a pc board edge connector - the
Re: Copper Foils
2009-01-05 by mfisch2001
Stained glass copper foil adhesive will not stand up to solder temperatures on a flat surface. I tried using it to repair a pc board edge connector - the
Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-04 by leon Heller
... From: Matthew Mucker To: Sent: Sunday, January 04, 2009 11:15 PM Subject: [Homebrew_PCBs] Shelf life
Shelf life of HCl/H2O2
2009-01-04 by Matthew Mucker
I etched my first board a few weeks back with HCl/H2O2 and was very happy with the results. I saved the etchant, since I d only etched one small board with it,
Re: [Homebrew_PCBs] pcb anti-environment coating?
2008-12-31 by leon Heller
... From: DJ Delorie To: Sent: Wednesday, December 31, 2008 4:49 PM Subject: [Homebrew_PCBs] pcb
Re: [Homebrew_PCBs] pcb anti-environment coating?
2008-12-31 by Stefan Trethan
I have a spray can of silicone conformal coating at work, that stuff is really great because it will hold up to some temperature and high voltage, and it s
pcb anti-environment coating?
2008-12-31 by DJ Delorie
What s a good thing to coat my built boards with, to protect them from the environment? I ve got a temperature/humidity sensor outdoors on a small pcb, but I
Re: [Homebrew_PCBs] PCB drill bits in Canada?
2008-12-31 by leon Heller
... From: magor432 To: Sent: Wednesday, December 31, 2008 12:47 AM Subject: [Homebrew_PCBs] PCB drill
PCB drill bits in Canada?
2008-12-31 by magor432
Hello, I m new to the world of home pcb making. I am working on a project that calls for a pcb and I have decided to make my own in order to learn. I have
Re: What size drill bits?
2008-12-30 by Dennis
Hi Matthew, ... Congrats. Have you tried ink jet transparencies for transfer? I tried paper with mixed results. With inkjet transparencies, there s less
Re: [Homebrew_PCBs] What size drill bits?
2008-12-29 by kabowers@NorthState.net
... These might be of interest: href= http://www.goldmine-elec-products.com/prodinfo.asp?number=G15746
Re: [Homebrew_PCBs] What size drill bits?
2008-12-29 by John Honniball
... I use 0.8mm for IC sockets, resistor and capacitor leads, and small transistor leads. For larger pins like power transistors, voltage regulators and the
Re: [Homebrew_PCBs] What size drill bits?
2008-12-29 by leon Heller
... From: Matthew Mucker To: Sent: Monday, December 29, 2008 1:11 AM Subject: [Homebrew_PCBs] What size
Re: PCB resist cleaning question
2008-12-29 by morriso2002
Bingo! NaOH worked like a charm but took a little longer than 10 minutes. Thanks to all for your suggestions. Morris ... NaOH ... and ... these
Re: [Homebrew_PCBs] What size drill bits?
2008-12-29 by JanRwl@AOL.COM
In a message dated 12/28/2008 7:12:23 P.M. Central Standard Time, matthew@mucker.net writes: I assume I can use a .0394 for all of them, right? Right. If you
Re: What size drill bits?
2008-12-29 by tsescrl
Hello, For example: 0.6mm = 24 mils 0.7mm = 27 mils 0.8mm = 32 mils 0.9mm = 35 mils 1.0mm = 39 mils etc... Convertion is: mm/0.0254 = mils But, it si very
What size drill bits?
2008-12-29 by Matthew Mucker
All, I m new to the DIY-PCB scene. I ve just finished my first test etch and am just overjoyed at the results I was able to achieve my first time out of the
Re: PCB resist cleaning question
2008-12-28 by boons007
Morris, its probaly negative resist that has been exposed or aged, Xylene or Xyloh(Xylene with Alcohol) should remove it, you may need to soak for a while if
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by Stefan Trethan
It s almost as if they were designed to resist ;-) ST
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by Adam Seychell
... Its most likely negative dry film resist. If so then room temp 3~5% NaOH will strip it off in a 5~10 minutes (no scrubbing as it will swell and just lift
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by Stefan Trethan
If you already tried acetone, i believe you are out of luck with solvents. Try strong developer (NaOH) for some time, see if that gets it off. The problem with
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by leon Heller
... From: morriso2002 To: Sent: Sunday, December 28, 2008 2:14 AM Subject: [Homebrew_PCBs] PCB
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by JanRwl@AOL.COM
In a message dated 12/27/2008 8:14:34 P.M. Central Standard Time, vilgotch@bigpond.net.au writes: Anybody recognise this stuff and know how to remove it?
Re: [Homebrew_PCBs] PCB resist cleaning question
2008-12-28 by Colin & Alma Lane
Try lacquer thinners then steel wool & ajax. Colin ... Alma & Colin Lane Adelaide, South Australia Skype colinalma clan1623@bigpond.net.au [Non-text
PCB resist cleaning question
2008-12-28 by morriso2002
Hi all, I obtained some surplus PCB material recently which was pre-coated with some sort of photo resist. The coating is red/orange coloured and in poor
Re: [Homebrew_PCBs] Re: Toner Transfer Details?
2008-12-24 by Stefan Trethan
I bought my drills from ebay. There were a couple of sellers with new and used PCB drills. I could get pretty much the dimensions i needed. Can t comment on