Richard mentioned he used alcohol before.
I gather US rubbing alcohol is some poor quality isopropanol,
sometimes with all sorts of crap thrown in, so your theory seems
plausible. But then most laquer thinner is not exactly a single
analysis grade solvent either ;-)
A good test to see if something is "left" is to put a drop of the
thinner on a clean piece of glass or mirror. Much easier to see any
haze than on copper.
We need more info from Richard, everything else is guesswork.
ST
On Sun, Dec 11, 2011 at 1:37 PM, Mars Bonfire <mbonfire@...> wrote:
> Checked a number of data sheets for lacquer thinner, none are or contain xylene.
>
> My experience using lacquer thinner for non PCB purposes is that it is a more aggressive, more volatile solvent than most. As such, I could understand why it is more effective in removing organic surface contaminants from the PCB, but as far as leaving a "good" film on the board that promotes adhesion or converting the copper to something that is better sounds suspect. My guess is that is that it is just a better solvent or what was being used before was contaminated with something that interfered with adhesion.
>
> --- In Homebrew_PCBs@yahoogroups.com, Leon Heller <leon355@...> wrote:
>>
>> On 10/12/2011 20:05, Roland Harriston wrote:
>> > Richard:
>> >
>> > I think that there might be a number of compounds that are generally
>> > called "lacquer thinner".
>>
>> Lacquer thinner is xylene.
>>
>> Leon
>> --
>> Leon Heller
>> G1HSM
>>
>
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