>
>" already hydrated lime in powder form (Ca(OH)2)
>"
>I have a 5 gal bucket being delivered this week.
>...and I will report back some time. Getting to
>be a busy.

this should work for you, however be prepared for cracking, detouching, etc. until you will get the right moisture and mixture specific to your area and setup.

there is always a well tested "professional grade" fresco lime putty at:

http://truefresco.com/frescoshoppe

but before you get that try to achieve results with what you have.