Make sure the canvas covers the entire piece of clay and that there is some extra canvas in front of the clay. This will prevent the canvas from slipping off during the rolling process.
Remember to roll the clay down incrementally. Don’t take giant steps, or you may damage your slab roller. [5] X Expert Source Deanna RanlettPottery & Ceramics Professional Expert Interview. 12 November 2021.
You can turn the wheel back and forth so that the roller moves over the clay in both directions. This will help to create an even slab.
Using a canvas will also reduce the dust generated, making the clean up easier later. [10] X Expert Source Deanna RanlettPottery & Ceramics Professional Expert Interview. 12 November 2021.
If your rolling pin is too thin, you may end up with ridges in the middle of the clay. It should be wide enough to fit across the entire slab of clay.
In some instances, you may need to place two sticks on top of each other on either side of the slab to create a thicker slab of clay.
Complete this process on both sides of the clay.
You can also purchase patterns for slab clay to help you with your project.
For example, you may not need a pattern if you are creating something using a simple square or rectangle. Freehand patterns will also allow you to create unique, one-of-a-kind pieces.
You can work with clay that is softer than this, but you need to be extra careful because it can break easily. The length of time it takes for clay to dry will vary depending on your location and climate. If you live in a humid environment the clay will take longer to dry than an arid climate. [18] X Research source Check the clay regularly because it could take over a day to dry.
For example, if you are making a mug, you can begin with a rectangular slab of clay. Taper the two short edges of the rectangle. Then curve the rectangle and attach the two ends together so that you have a cylinder shape.