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,...
... 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...
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...
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...
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...
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...
... 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 ...
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...
... Ah Ha, the rejuvination process, adding H2O2 before each etching session, until it becomes CuCl. Is that the stage where the solution changes color? ...
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...
... 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...
... 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 ...
... 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%...
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...
... 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...
... 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...
... 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...
... 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...
... 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 ...
... 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...
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...
Hello Markus, ... Device for measuring humidity is named HyGrometer: http://en.wikipedia.org/wiki/Hygrometer ... There are no dumb questions, only dumb answers...
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,...
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...
This is the one i bought: <http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=230309376059> I wish it had a scale just for specific gravity, down to 1.0. I...
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...
... Well, that's what I did. ... Assuming you're using 37% HCl and 3% H2O2, it's two parts H2O2 and add one part HCl (always add acid to water, not the other...
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