Homebrew PCBs

I will not go into that discussion again, we have fought that battle a  
long time ago and fighting over the same ground is useless. Acetone is not  
carcinogenic, check _any_ MSDS, like  
<http://www.purdue.edu/rem/home/booklets/Acetone%20MSDS.pdf>, carcinogenic  
- not listed. Acetone production can use carcinogenic chemicals, and other  
chemicals, like petrol, are carcinogenic too. IMO acetone is one of the  
safer solvents.

That's all i i'll say about acetone beeing carcinogenic, see the archives  
for the full discussion. I do not know where the misinformation about  
acetone came from, but many people do believe it it seems. I have asked  
for the slightest sliver of information about acetone beeing carcinogenic  
and not a single URL was beeing produced in response. My point is made.

As for avoiding it, i'm sure other detergents can be used as well, or  
alcohol. Ethanol would be an option (also for the new plastic lenses!),  
and works well also. I have read the industry uses scrubbing under flowing  
water for PCBs and no solvent at all.

ST




On Tue, 17 May 2005 08:37:20 +1000, Andrew <swinn05@...> wrote:

> Acetone is listed as a carcenogenic, not sure about the thinners.
> Acetone
> Is a horrible chemical in it's own right. We have acetone at work as we
> Occasionally use it in the optical industry to clean factory marking off
> Prescription optical lenses (anyone in the optical game will know this).
> However with the advent of modern day resins, polycarbonates and
> protective
> Coatings we avoid it as much as possible as it can damage a lot now.
> What we use instead is called 'Citro Clean', its like an acidic type
> cleaner
> Made from oranges etc. Don\u2019t know how well this would work for required
> task
> But is certainly a lot more healthy for the user.
> Cheers,
> Andy S
> http://www.remixreality.com