Hi guys, Ive been unable to find "ultracal 30" here in the U.K. and have been "told" this and that is a substitute by retailers. I'd rather get the opinion of you guys as to what is the best substitute. thanks in advance
I was on a gig where we ran out and had to use the "poor man's" version... We mixed plaster of paris with some portland cement, which is really most of what Ultracal is, anyway. If you check the MSDS for Ultracal, it gets you a pretty good idea of what you need to make it. It isn't perfect, but in a pinch should get you through.
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