I get a lot of little air holes in the top of my stepping stones when I turn them out. I am using plastic molds and tap them on the ground to release the air, but still get lots of little air holes in what I would like to be a smooth surface.
By EstherSue
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What I have done is when the bottom is actually going to be the surface of a stepping stone I put enough concrete to cover the tiles and a little more, Tap, then fill it up the rest of the way with the concrete if I still have a bubble on the surface after turning out, I just mix up some of the concrete and push it in with my finger and smooth the surface. I liked
The foam letters numbers and shapes along with the glass tiles. After it is completely dry I will lift out the foam and it leaves a nice sharp indentation.
Tap them as you go, and maybe a little less water.
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