I am having a hard time figuring out how to make slurry. I've poured countertops in pre-set forms, and I've got little air holes on the edges. I need to fill them in with slurry, but I don't know how to make slurry.
I know it is portland and water. Very fine sand can be used, but I've heard I should use acrylic, plasticizers, or something else.
Can anyone clear this up?
Thanks.