How to pour pre-made molds. For pre-made molds, mix the concrete per manufacturer specs with water and stir well. Once you have the right mixture, spray the insides of your molds with mold-release.

I used Mold Star 30 silicone rubber for the molds and Quikrete Countertop Mix in white for the concrete. For complete instructions go to my website. HomeMade-Modern.com ...

Coat the inside walls of your pot (outer mold) with cooking spray or oil and place it upside down over the inner mold. Mix up your concrete (follow these instructions and be sure to wear a mask ...

If you’ve got access to a 3D printer, some concrete, and a few days to let it dry, you won’t have to buy flower pots ever again. With a 3D-printed mold, you can create custom vessels that are ...

Make additional concrete pieces for the top with plastic pots or plastic saucers as molds (or whatever shape you like). Spray mold with cooking oil (such as Pam) and fill with wet concrete.

Watch Robot Arms Stretch Lycra To Make Strange and Unique Concrete Molds. The designers of the process say it will change pre-fab construction. By Sam Eifling Published: May 20, 2016 9:02 AM EDT.

The key is to fabricate accurate molds; then just mix up a batch of concrete and pour. These Tools Will Help. Marshalltown 24-Inch Hand Float. $21 at Amazon. DeWalt Table Saw. Now 27% Off.