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Terra Alba – The Magic Pixie Dust

By Ed McCormick 3 years ago 58 Views No comments
Mixing Plaster  

When working to control the setting time of plaster, the old plaster masters used vinegar to delay the setting time and everyday table salt to accelerate the setting of gypsum based cements including Plaster of Paris. Though table salt does indeed speed the setting time, it will appreciablely reduce the strength of the plaster.