Cheese Head that is a very good point... maybe just a filler because I'm not sure I'd ever get this to totally dissolve. Here is a little photo compilation I put together from start to approximately 30 hours of stirring on the plate. I sacrificed a rennet tablet for the pictures since I had the one on the stir plate since yesterday.
Tablets and water before adding.
Here is the tablet after about 30 seconds - very quickly breaks up and looks like it will work like a charm. (definately should have taken this picture against a less busy background!)
Stir bar added and on the stir plate - still some larger chunks
Here is the product of about 30 hours of stirring - still cloudy and will easily seperate to a clear liquid and chalky film on the bottom of cup.