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Homebrew_PCBs@yahoogr...
Apr 1, 2003 8:37 am
1418
Thanks for the additional info, Adam. What kind of methyl orange are you using - aqueous? What percent, 0.1% or....? (MO seems to be more readily available...
... don't know about shelf life, its from my chemistry set that I got when I was a kid (~ 20 years ago) and its works fine. The indicator solution I use is...
i want info about oscillators and their functioning.if anyone has the material pls send it tnx Catch all the cricket action. Download Yahoo! Score tracker ...
Hi, Any Dos software will work with Win 3.1 as it is running on top of Dos. Pclogic use to have a Dos program ver 1.1 that was pretty good. You can still find...
I bought a plastic Coleman cooler to hold my cupric chloride etchant. The manufacturer says this is made of polyethylene. Is this likely to stand up well, or...
hi thank you for you repply where i can find pclogic 1.1 ? regards muale "Derek B." <hightechsystems@...> wrote:Hi, Any Dos software will work with Win...
Yes. Polypropylene, and polyethylene are the two most common plastics for containers and packaging and are have very good chemical resistance. I've been...
Try EasyTrax from Protel. It run in DOS, but should be mighty fast, even on an old machine. Search Easytrax on google and you should have no problem finding...
El Cheapo Hydrometer Here is an idea: Use a small test tube with a few lead fishing weights at the bottom for a hydrometer. Seal the top, drop it in the...
I have completed and air sparger described on the Think and Tinker website. It sits in the Coleman cooler. I drilled a 9/16" hole in the lid so a piece of 1/4"...
Hi Adam- the HCl I have is 20 deg. Baume or about 31.5% HCl, how should I modify your recipe (in message 1367 - Preparation of cupric chloride etchant)? Grant...
I found that higher copper gives faster etch. Currently I get around 15 minutes etch time at 20°C for 35 um copper, bubble agitation with a solution composed...
Wow, you have been hard at work. Congratulations on your findings. I just bought a new Grade B burette on the weekend and it shipped today <g>. (I had decided...
The price for my Grade B, teflon stopcock 50 mL burette was $48.00
Canadian, which equals AUD$55. I was thinking about buying a used
burette from an internet...
... thats what I paid :) ... thanks, you can use kitchen scales to measure out the copper wire. Sometimes copper wire strands are coated with lubricants and...
... Just think 5 liters of etchant at 150g/l of dissolved copper then you'll need to 4.4 pounds of CuCl2.2H20 or 5 pounds cost you 5*$39 = US$195 if you buy...
Yeah, and my tank will hold up to 34 litres, and the Canadian chemical supplier I found will sell me CuCl for $175/lb. Even 5 litres worth would be beyond my...
Hi Adam - well this is quite timely, since the source I hoped could provide methyl orange, Cole Parmer (LabCo in Canada) does not sell chemicals and to date,...
It also appears that copper analysis chemicals might be easy to find- ammonium hydroxide is available as household ammonia, (though I don't know at what...
First Hi to all, as you may guess I'm new to this Group. If I don't regard any rules or common behavoir suggestions please point it out. To the question: I...
Well, the CuCl2 etching is basically what is happening in your solutions, the difference between the etching technique discussed recently on this group and the...
I see... Thanks for the explaination. I already had the idea that basically the same might happen after writing the post. But i don't fully understand why all...
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