> Just wondering any Cr Etchant or Ti Etchant or Mo Etchant
> which will not attack Al.
> Thanks.
> Johnny

CR-14 from Transene for etching Cr will not attack Al.
CR-7, also for Cr, will etch Al.

If the Ti or Mo etchant has HF in it, it will attack Al.

        --Kirt Williams Agilent Technologies

> Just wondering any Cr Etchant or Ti Etchant or Mo Etchant
> which will not attack Al.
> Thanks.
> Johnny