14 Ways To Stop Clay Slabs Warping
Tip 1: Flipping Your Slab - try not to bend your slab when flipping
Tip 2: Minimize Handling - It’s generally best to move your clay slabs as little as possible
Tip 3: Use a Bat When Throwing On The Wheel
Tip 4: Roll Slabs in Different Directions
Tip 5: Compress Your Clay - Run a rib over the clay in the same direction to align the particles
Tip 6: Wedge Your Clay
Tip 7: Work with Slightly Thicker Slabs
Tip 8: Use an Absorbent Board
Tip 9: Use Rice Bags or Sand Bags - Place the bag on the middle of the plate as it dries
Tip 10: Use a Metal Drying Rack
Tip 11: Use Clay with a Lower Shrinkage Rate - It’s best to choose a clay body with a shrinkage rate that is lower than 12%
Tip 12: Load Your Bisque Kiln Carefully - ideally bisque fire slabs, plates, and platters lying flat
Tip 13: Add a Foot Ring
Tip 14: Keep Your Slabs and Plates Level in the Glaze Fire as well
courtesy www.thepotterywheel.com