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>>If it's Electrolube PRP I wouldn't bother. The original stuff washttp://www.electrolube.co.uk/docs/bprototyping.html
>
> OK, but they changed it a few years ago and I can't get the newer
> stuff to work. <
>
>>>I use it plenty of times to make boards with 8mil tracks and
>
> spacings without a single fault on a 10cm x 10cm board. It only
> doesn't work when the technique is wrong (inadequate cleaning etc). <<
>
> Apparently, CG Electronics is out of business. It's resist product
> was called, Etch Resist Sensitizer (part no. 22-074).
>
> I might like to try the Electrolube PRP. Where can it be purchased?
>
> Thanks much,
>
> Brian Chapman
> Cedar Rapids, Iowa