Open porosity is accessible to gas or liquid and influences water absorption, permeability and chemical penetration. Closed porosity remains isolated inside the ceramic. Two ceramics with similar total porosity can therefore behave very differently in service.

A complete custom process ceramic RFQ should include drawing, material or service conditions, operating temperature, chemistry, critical tolerances, load, mating components, quantity, inspection requirements and failure history where relevant. This reduces both quotation uncertainty and production risk.

First Article Inspection is valuable for custom ceramic parts because firing shrinkage, warpage and machining can affect final geometry. Verify critical dimensions, material and functional fit before releasing a large production batch.

Reverse-engineering an old ceramic component requires separating original geometry from wear, scale, cracks and distortion. Measure multiple samples, inspect mating equipment, identify the material and create a controlled replacement drawing before production.

Custom ceramic parts usually need precision finishing only on functional surfaces such as seals, fits, sliding faces or wear interfaces. Unnecessary polishing of noncritical surfaces increases machining cost without improving process performance.