Measure out ~6.5 pounds of ice water (see chart on website) into mixing bucket. Add colorant and other necessary additives to water at this point. Pour 2/3 mix into bucket and mix using high-shear mixer. Once smooth and lump free, add remaining mix. Mix until smooth and lump free. Allow mix to sit for at least 5 minutes. For backer, add 1.5 pounds AR glass fiber. Remix and add water or plasticizer as needed.