Homebrew PCBs

>Date: Fri, 30 Jul 2004 13:57:41 -0400
>To: Homebrew_PCBs@yahoogroups.com
>From: steve gunsel <gunsel@...>
>Subject: IPA and acetone
>
>ST,
>
>Volatility (speed of evaporation) has a lot to do with it. Volatility and 
>solvency are not the same. Acetone, however, is a potent solvent for many 
>substances and also happens to be highly volatile. If you dissolve 
>"anything" in the acetone, and allow the acetone to evaporate, the 
>"anything" will be left behind.  And acetone evaporates very quickly - it 
>starts evaporating as soon as it is applied.   Nothing on a board is 
>likely to evaporate faster or it would not be there in the first 
>place.  IPA evaporates more slowly so you have a better chance of removing 
>the IPA with the dissolved residue.
>
>Help any?
>
>Steve Gunsel
>Medina, OH
>
>>As for the "IPA leaves residue",
>>it sounds right, but strangely i get holes in the transfer with acetone
>>while it is perfect with IPA.
>>I must try again with 100% same procedure.
>>
>>ST


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