Fabrication of high-precision micro-shell 3-D resonators is a challenging task. We report a non-isothermal model and finite-element simulation results for the prediction of geometries of fused silica micro-shell resonators fabricated with a blowtorch molding process. The model considers coupling between thermal and mechanical aspects of the reflowing process and heat transfer at the fused silica/mold interface, which dramatically controls the final shape of the resonator. The model is successfully applied to investigate the production details of 3-D hemi-ellipsoidal shells of revolutions with eccentricity, such as birdbath shell resonators. Comparisons of numerical results with experimental observations demonstrate that the model can predict an overall trend of thickness distribution. The numerical model can be used to optimize shell geometry and thickness by changing different fabrication parameters, such as surface heat flux, conductivity of the mold material, and initial temperature of the mold. The simulation technique also allows the mold shape and design to be optimized to fabricate different micro-shell geometries and dimensions. The model clarifies the blowtorch molding capabilities and limitations for fabrication of hollow 3-D shell resonators. [2016-0251]