Custom Silicone
Mold Manufacturing
From DFM analysis and tool steel selection to CNC machining, EDM, polishing and trial injection -- YMS engineers production-grade silicone molds built for repeatability, longevity and global compliance.
Premium tool steels,
industrial precision machinery
We select hardened mold steels based on part geometry, surface finish requirements and expected production volume. Our in-house CNC, EDM and grinding capabilities ensure every cavity meets exacting dimensional and aesthetic standards.
Tool Steel Selection
Processing Equipment
Component machining,
assembly & dimensional control
Every mold base, cavity insert, slide, lifter and ejector pin is individually machined, inspected and fitted by senior toolmakers. Precision assembly guarantees flash-free parting lines and consistent part geometry across the full production cycle.
Component Machining
Cavity inserts, cores, sliders and ejector systems machined individually with CNC and EDM. Each component is traceable with inspection records.
Fitting & Assembly
Hand-fitted by senior toolmakers with 10+ years of experience. Parting lines, shut-offs and venting systems verified under blue-paint checks.
Dimensional Verification
Full CMM inspection against 3D CAD model. All critical dimensions documented in a formal mold inspection report before trial.
Surface Finishing
Mirror polishing (SPI A1-A3), VDI texture, matte and custom finishes applied according to final product requirements.
T0 trial molding, defect analysis
& engineering modification
Trial injections (T0, T1, T2) validate the mold under real production conditions. Any defect -- flash, short shot, air trap or dimensional drift -- is systematically analyzed, documented and corrected until first-article approval is achieved.
First Trial Shot
Initial silicone injection on production press. Samples sent to engineering & QC for full evaluation.
Defect Analysis
Root-cause review of flash, flow lines, air traps, warpage. Engineering change report issued.
Mold Modification
Venting, gating, cooling or cavity geometry revised. Re-trial validates improvements.
Golden Sample
First-article sample approved by client. Signed-off reference retained for mass production.
Common Trial Issues & Solutions
Formal mold acceptance
& mass production handover
Once first-article samples are approved, the mold undergoes a formal acceptance review with full documentation handover. Production parameters are locked, and the mold enters the mass production workflow with ongoing SPC monitoring.
- -- Mold Inspection Report (dimensional)
- -- First Article Approval (FAI)
- -- Process Parameter Sheet (PPS)
- -- Material Certificates (steel, hardness)
- -- Mold Structure Drawings (2D/3D)
Full Dimensional Audit
CMM report cross-checked against drawing tolerances across all critical features.
Process Lock-in
Injection parameters (temp, pressure, cycle) documented and locked under SOP.
Pilot Run
500-1000 shot pilot batch to verify stability before full mass production release.
SPC Monitoring
Statistical process control tracks dimensional stability throughout production life.
Mold maintenance, serialization
& lifetime management
Each mold is uniquely serialized and tracked throughout its lifecycle. Scheduled cleaning, inspection and preventive maintenance preserve dimensional integrity, extending mold life well beyond standard industry benchmarks.
Serial Numbering
Every mold receives a unique ID engraved on the base plate. Linked to a digital record covering steel certs, inspection reports, and shot history.
- -- Owner & project reference
- -- Build year & revision
- -- Material grade & cavity count
Preventive Maintenance
Routine inspection every 5,000 shots. Cleaning, lubrication, vent clearing and seal replacement protect mold performance.
- -- Scheduled PM cycles
- -- Wear part replacement
- -- Climate-controlled storage
Lifetime Tracking
Shot counter and digital logbook track every production run. Predictive analytics flag refurbishment windows before quality drops.
- -- Real-time shot counting
- -- Refurbishment forecasting
- -- End-of-life planning
Typical mold structures
& production case studies
From single-cavity prototypes to high-cavitation production tools -- a selection of mold types we build routinely.
16-Cavity Spatula Tool
S136 cavity, hot runner, 500K shot lifetime. Serves a European kitchenware brand producing 2M units/year.
Silicone + PP Co-mold
Two-shot overmolding integrating rigid plastic structure with soft silicone grip. Perfect bond via chemical adhesion.
Collapsible Cup Tool
Side-action sliders for complex undercuts. Food-grade LSR, FDA/LFGB certified for a US outdoor brand.
Baking Mat & Mold Series
Large-surface compression tools for silicone baking products. Mirror SPI A1 finish for food release performance.
Sealing Ring Tool (64-Cav)
High-cavitation tooling for industrial seals. ±0.03mm tolerance maintained over 1M+ production shots.
Ready to build
your custom silicone mold?
Share your 3D files, target volumes and quality standards. Our tooling engineers will respond with a detailed DFM report and transparent quote within 48 hours.