grantfair2001 wrote:
performance with this etchant, so I'm just trying to nut out what makes
it work. It seems S.G > 1.30 and acid > 1M. Might one day do a series of
controlled tests. 20 minutes sounds reasonable, for your setup.
>Thanks for the info. Its just that I've seen wide variations in etch
> A short PS to my last poat. When I started using this etchant in May
> 2003 the SG was 1.245; as noted last post it is now 1.262.
>
> Gramt
performance with this etchant, so I'm just trying to nut out what makes
it work. It seems S.G > 1.30 and acid > 1M. Might one day do a series of
controlled tests. 20 minutes sounds reasonable, for your setup.