To save space on your ware carts and work shelves Plywood Bat works great.
Plywood Bat are flat round discs that are extremely useful tools in a ceramics.
Caring for your Bat System:
Do not wash: It’s the key to keeping your inserts from swelling. Let it all be dirty.
You can wipe your clay off when you’ve finished throwing, but the less water you’ve got on it the better.
Do not stack the insets: If possible, store them on their side.
If inserts swell: Let them completely dry out (either over several days or a couple of hours in a 95°C oven).
If this doesn’t fix their fit, then lightly sand the edges as needed.