IIRC, in college we used cheap cheap cheap powder detergent.  I'm pretty
sure that the cheap cheap cheap stuff is mainly just NaOH with some
cutting agent; obviously best to steer clear of things with scents and
fabric
softeners and what-not.

This is me dredging data up from a single day's explanation of methods,
from over four years ago, so naturally, YMMV.

Mike H.

>I have purchased RS Components Aerosol photo resist 198-9651.
>
>They suggest that I need to use a there "Universal Developer" 690-849. Is
>this really needed as it is expensive.
>
>  I thought the UV light exposure would soften the photo resist enough
>for etching - but  if this is not the case then what does exposing to UV
>do?
>
>I was just going to use the photo resist then etch it.
>
>*************************************************
>Roy Hopkins   :-)
>
>Tauranga
>New Zealand
>*************************************************
>
>
>
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