When glazing ceramic pieces, it's crucial to manage glaze application, especially around the bottom edge that rests on the kiln shelf. While potters typically avoid glazing the absolute bottom to prevent sticking during firing, drips or excess glaze can sometimes get onto this area. Cleaning this excess glaze before firing is a vital step.
The most effective way to clean excess glaze dripples from the bottom of your ceramic piece is by using simple tools:
- A Damp Sponge: As shown in practical demonstrations, a damp sponge is highly effective for wiping away wet glaze.
- Your Finger: For fine-tuning and evening out cleaned spots, your finger can be used to smooth the surface or remove any remaining residue.
Step-by-Step Glaze Cleanup
Cleaning glaze from the bottom is a straightforward process, typically done shortly after the glaze has been applied and before firing.
- Gather Supplies: You will need a damp sponge and potentially a small container of water.
- Identify Excess Glaze: Look for any drips, smudges, or unintended glaze coverage on the very bottom surface of your ceramic piece – the part that will touch the kiln shelf.
- Wipe with a Damp Sponge: Gently use a damp sponge to clean off those glazed dripples at the bottom. The dampness helps lift and remove the wet glaze efficiently. The video reference notes that the glaze comes up very easy with this method.
- Refine with Your Finger: After the bulk of the glaze is removed, you can then use your finger to even up those spots. This helps create a clean, smooth surface free of glaze.
Why is Cleaning the Bottom Important?
Removing all glaze from the bottom edge and footring (if present) is essential because glaze turns into a glass-like substance when fired in the kiln. If glaze is left on the bottom surface, it will fuse the ceramic piece directly to the kiln shelf, potentially damaging both the piece and the shelf.
By following these simple steps, you ensure your ceramic work fires successfully without sticking, resulting in clean, professional-looking finished pieces.
