how to cut a countertop for a kitchen sink

(I was making two sink countertops, in case I didn't like the first one, that's why there are two molds). When no stain was getting picked up by the rag, I did it a couple more times and left to dry for a day. Next day I rolled the sealant on 3 times in very thin coats, with no time intervals in between. Here's how to make concrete countertops. Pay special attention to the space around your sink. If you have silicone sealant or similar that is visible I removed loose grout behind the kitchen sink and left the space