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They round the flat jiggered rim on a rotating sponge machine, then sponge the whole bowl, fountain glaze the insides carefully by hand, and then machine dip the outsides.

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The myth of modern ceramic manufacturing is that everything is automated by advanced robotics. In reality, commercial production relies heavily on human artisans who execute the same fundamentals as studio potters—jiggering, slip-casting, wax-resisting, fountain-glazing, and brush-banding—at astonishing speed and muscle memory.
Rheology Control: Some slurries are highly thixotropic while others are thin and watery under constant agitation. Workers dip, spin, and extract pieces in seconds without runs, drips, or extended drying pauses.
Custom Tooling: Instead of standard shop tongs or studio brushes, workers rely on single-point holding tools, custom wire dipping tongs and painting and stamping sponges.
Hybrid Workflows: High-speed production pairs human dexterity with mechanical momentum, worker pairing spinning sponge tables for rim finishing with rapid fountain glazing for interior coverage.
Rapid Jiggering: Workers turn large masses of soft clay into uniform cups or bowls in seconds using jigger wheels equipped with plaster heads and precision-fit 3D-printed liners.
Handle Preparation: Custom plaster holders and specialized blade cutters shear slip-cast handles to exact vessel contours instantly, bypassing hand-trimming.
Glazing & Surface Techniques
Fountain & Dip Glazing: Specialized setups allow workers to fountain-glaze the interior and rim while simultaneously dip-glazing the exterior in contrasting colors.
Specialized Tongs: Custom wire dipping tongs allow workers to grab freshly dried glaze borders on large items like casseroles or platters without leaving fingerprint marks or disturbing the coat.
Direct Screen Printing: Draping a silk screen directly around a rounded mug and scraping ink through via a hand rubber scraper achieves detailed surface decoration in a single pass.
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