TOOLING MATERIALSApplication / Ceramics
Ceramic tooling is a sequence: a master or block establishes the shape, a durable case mold reproduces working molds, and the working mold shapes the ceramic body. Material selection depends on which of these jobs the tool performs.
Engineering requirements
01 / MASTER / BLOCK
The master defines the ceramic form and the tooling split. It must be easy to machine, correct and finish while holding the specified geometry. Account for the ceramic process shrinkage in the approved design.
02 / CASE / MOTHER MOLD
A rigid resin shell supports the shape; selected flexible facing or split sections allow the plaster mold to be released. Design parting, keys, joints and support so repeated plaster casts reproduce the same geometry.
03 / WORKING MOLD
In conventional slip casting, the plaster working mold draws water from the slip and builds the ceramic wall. It is a consumable production tool made using the case mold.
Engineering requirements
| Tooling function | EPTEK material option | Customer concern |
|---|---|---|
| Machined or cast master | PUBOARD model boards or selected PU casting systems | Machinability, dimensional stability, correction, finishing and release |
| Flexible case facing | Selected polyurethane elastomer system | Tear resistance, controlled flexibility and compatibility with wet plaster |
| Rigid case shell and backing | EPLAM / EPMOLD laminating systems or selected filled casting system | Stiffness, manageable weight, cure and continuity of the supporting shell |
| Working surface | Compatible tooling gelcoat, where the case design uses a rigid facing | Detail reproduction, release, cleaning and adhesion to the backing |
Select the exact resin and hardener together with the facing, plaster, release system and cure schedule. Confirm performance with repeated mold-making trials before using the system in production.
Process distinction
A pressure-casting working mold needs a controlled porous structure for water removal, air distribution and repeated cleaning. A dense polyurethane or epoxy tooling resin cannot replace that porous working material simply because it can reproduce the shape.
Engineering requirements
| Input | Why it matters |
|---|---|
| Ceramic process and object | Tableware, sanitaryware and other ceramic parts differ in size, geometry, forming process and handling. |
| Required tool in the sequence | Identify whether the material will make a master, a case mold or a working mold. |
| Split and release design | Evaluate undercuts, flexible faces, removable sections, keys and damage during demoulding. |
| Plaster and production duty | Confirm plaster formulation, water contact, cure time and the planned number of replacement molds. |