Production Process

At Stella Dolls Studio, production is guided by precision, structural control, and material integrity. Every unit follows a defined workflow designed to ensure consistency, durability, and refined surface quality.

Digital Sculpt Development

Each project begins with 3D sculpt development. Anatomical proportions, surface transitions, and structural balance are digitally refined before any physical tooling begins.

This stage allows:

• Accurate symmetry control
• Fine surface detailing
• Proportional adjustments
• Internal structural planning

Digital modelling reduces variability and ensures repeatable mold precision.

Mold Fabrication

Once the sculpt is finalized, precision molds are produced to capture micro-level surface details. Mold accuracy directly affects texture clarity and dimensional stability.

High-tolerance mold fabrication ensures:

• Consistent wall thickness
• Controlled material distribution
• Reduced surface distortion
• Improved structural balance

Mold integrity is critical to long-term performance.

Material Preparation

Material preparation varies depending on the selected configuration. Stella head components are produced using high-grade silicone, while body components may be manufactured using either silicone or thermoplastic elastomer (TPE), depending on the chosen model.

Silicone Preparation

For silicone components, a two-part liquid system is proportioned and mixed under controlled conditions. Once combined, the material undergoes a chemical cross-linking reaction during curing, forming a stable elastic structure.

During preparation:

• Mixing ratios are precisely measured
• Homogeneity is carefully monitored
• Vacuum degassing may be applied to minimize air entrapment

This controlled preparation stage directly influences surface smoothness, structural density, and long-term material stability.

TPE Preparation

For TPE body configurations, material is supplied in pellet or compound form and processed through controlled heating. Unlike silicone, TPE transitions through a physical softening process rather than a chemical curing reaction.

During processing:

• Temperature control ensures consistent melt flow
• Material distribution is carefully regulated
• Cooling rates are managed to maintain dimensional stability

Proper thermal management is essential to achieving uniform surface texture and structural balance.

Casting, Molding & Controlled Solidification

For silicone components, the prepared liquid material is cast or injected into precision molds and allowed to cure under controlled conditions. The cross-linking process transforms the material from a fluid state into a stable, irreversible elastic structure.

For TPE components, heated material is introduced into molds and allowed to solidify through cooling. Because this is a thermoplastic process, temperature regulation plays a critical role in maintaining surface clarity and structural consistency.

The internal metal skeleton is pre-positioned and secured within the mold cavity before casting begins. As the silicone cures — or as TPE solidifies during cooling — the material encapsulates the framework, forming a unified structural system.

Internal Core & Weight Optimization

In most configurations, a lightweight internal core material is incorporated around the articulated metal framework before the final outer layer is formed. This core structure significantly reduces overall mass while preserving structural stability. Once the internal core is positioned, the outer layer of silicone or TPE is formed around the structure, creating a unified composite system.

While increasing the proportion of internal core material can further reduce overall weight, excessive reduction of the outer structural layer may compromise surface resilience and long-term durability. For this reason, material distribution is carefully balanced to maintain sufficient outer layer thickness while achieving practical weight optimization. This controlled balance ensures structural integrity, surface performance, and handling stability over time.

Demolding & Finishing

After curing or cooling, components are carefully removed from their molds and undergo controlled trimming and surface refinement to ensure dimensional accuracy and structural alignment.

For head components, finishing extends beyond structural correction to include layered pigmentation, makeup application and fixation, as well as individual hair and eyebrow implantation where applicable. Each stage is completed progressively to preserve surface realism and long-term cosmetic stability.

Precision during this phase directly influences visual refinement, articulation consistency, and overall durability.

Production Philosophy

Our production process is not designed for maximum speed. It is structured around material stability, dimensional consistency, and long-term performance.

From digital sculpt to final inspection, each stage contributes to structural reliability and refined detailing — forming the foundation of every Stella.