- Fresh Leaf
- Modeling Clay
- Smooth, Flat, Waterproof surface (a scrap piece of 3/4" melamine was used, but thick plastic will work too)
- Sacked Concrete
- CHENG Outdoor Pro-Formula Admixture
- Spray Adhesive
- Diamond Sanding Pads / Sandpaper
- Plastic Bag to cover while curing
- Particle Mask
- Rubber Gloves
Step 1: Step 1: Make Clay Wall
For a very smooth finish, you might try casting on a piece of glass or acrylic. Any surface that won't absorb water will work. If you want to use something like wood, it has to be sealed first or the wood wick the moisture away from the concrete and the surface will be clouded and rough.
Roll out a few 'snakes' and form up the walls by pinching the clay between your fingers and pressing down. It's important that the clay has a good bond to the casting surface. This technique will only work with relatively short walls - anything too tall and the pressure of the concrete will cause the walls to blow out.