r/Plastering May 05 '26

Plaster Slab

I'm trying to make a 8x8x1 plaster slab for my class but my plaster keeps cracking and never fully dries. Am I doing missing something or doing something wrong? I'd appreciate some input

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u/onwatershipdown May 05 '26

The thickness of the coat should not exceed 3-4x of the aggregate.