Mix and Test Slip
1 hourCalculate water ratio and specific gravity.
Intermediate2-3 weeks
Slip Casting Basics
Complete guide for slip casting basics — step-by-step workflow, tools, checklist, and expert tips to get started.
production pottersslip castersmold makers
Workflow
Cast in Plaster Mold
2 hoursCalculate mold volume and drain time.
Release and Trim Seams
1 hourPlan leather-hard trim and sponge finish.
Bisque and Glaze
2 daysLoad kiln with cast ware spacing.
Tools Used
Checklist
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Planning
Prep
Baseline
Quality
Tracking
Reference Materials
Slip Specific GravityTable
Target ranges by product.
| Product | SG | Notes |
|---|---|---|
| Mugs | 1.78–1.82 | Standard |
| Thinware | 1.82–1.86 | Long drain |
| Sculptural | 1.72–1.76 | Thicker |
Drain TimeFormula
Wall thickness ∝ set time − drain time — log each mold.
Plaster DustStandard
Wear respirator when mixing or trimming plaster molds.
Measure Twice
Verify all calculator inputs against physical measurements before cutting or mixing.
Quality Check
Compare results to known good references in slip before final assembly.
Stop If Unsafe
Pause immediately if tools malfunction, ventilation fails, or materials react unexpectedly.
Safety Notes
- Follow manufacturer safety data sheets for all chemicals and finishes.
- Work in ventilated area and wear appropriate PPE for the task.