How to use: Clay cutters
A cutter is a tool for cutting repeatable shapes out of a clay slab — blanks for mugs and cups, or decorative figures. The cutting edge is thin and sharp, so it works fast but calls for a few simple habits. Here is the proven routine.
- 01
Prepare the clay slab
Roll the clay to an even thickness, ideally between guide rails (typically 4-6 mm). An uneven slab gives a crooked cut and cracking edges.
- 02
Wait for the right moisture
The clay should be plastic but not sticky. Too wet and it clings to the cutter wall, too dry and it crumbles at the edge. Airing the slab briefly under plastic is usually enough.
- 03
Prevent sticking
Roll the slab on canvas and, before cutting, wipe the cutter with a damp sponge or dust the clay surface with a pinch of ceramic talc.
- 04
Cut the shape
Set the cutter perpendicular to the slab and press evenly with your whole palm until the blade goes all the way through. Do not twist the tool — twisting stretches and ripples the edge.
- 05
Push the piece out
Lift the cutter together with the clay and push the shape out from the back with a finger or thumb, laying it straight onto a board. Do not pull the clay by its rim, it will distort.
- 06
Smooth the edges
Wipe the rim with a damp sponge or finger to remove burrs. This is also the moment to slightly round the edge, which reduces chipping after firing.
- 07
Impressions and forming
If the tool carries a pattern or a ruler, press it in gently before you form the piece. When rolling a mug, score and slip the joints thoroughly.
- 08
Drying and cleaning the tool
Dry the cut pieces slowly, covered with plastic, so they do not crack. Wash the cutter immediately in lukewarm water — dried clay inside the cutting wall is hard to remove and dulls the edge.
Frequently asked questions
- What slab thickness works best?
- 3-4 mm for decorations, 5-6 mm for vessel blanks. A thicker slab needs slower, firmer pressure.
- Clay sticks to the cutter
- The slab is too wet. Wait a dozen minutes or wipe the tool with a damp sponge before each cut.
- The edges come out ragged
- Usually clay that is too dry, or twisting the tool while cutting. Press straight down, in one move, without rotating.
- Is the cutter suitable for porcelain?
- Yes. Porcelain is stickier, so wipe the cutting edge more often and work on a slightly drier slab.
- How do I wash the tool?
- Lukewarm water with a soft brush, right after use. No dishwasher and no hot water — the print can deform.
- Is the print safe for functional ware?
- The tool only touches raw clay, which is then fired and glazed, so the finished vessel stays safe.