We use a water soluble flux solder paste and get a 24 hour life on the
stencil with good results from 500 gram containers.  This is a little beyond
recommended time. Stencils are stainless steel. Paste brand is SCM.
Dick Pond

At 01:27 PM 2/27/96 -0100, you wrote:
>(Thanks to technet for the reactions on my questions on aqueous/IPA cleaning
>and assembly carriers)
>
>Question : 
>
>Is the "stencil-life" of solder pastes with water soluble flux really that
>bad? Can someone give me some practical data (hrs, batch-size, stencil-type,
>paste-manufacturer etc)?  (...data, data, need more input...)
>
>Thanks again!
>
>*******************************
> Ivo de Rooij
> Process Engineer
> Surface Mount Assembly
> Fokker Elmo BV
> P.O. Box 75
> 4630 AB Hoogerheide
> The Netherlands
> phone (+31)(0) 164 - 6 17 000
> fax   (+31)(0) 164 - 6 17 700
> e-mail     [log in to unmask]
>*******************************
> 
>
>
>