Homebrew PCBs

>> 5. Lightly sand and clean PCB stock with lacquer thinner, not
acetone.  
>> I've gotten very poor results using acetone, I don't know why. Trim
the
>> printed silicone paper to fit.

>I always use acetone, and have very good results. i do not like the  
>possible adverse effects to health of laquer thinner.

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’t 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