  While text-3D editing has made significant strides in leveraging score
distillation sampling, emerging approaches still fall short in delivering
separable, precise and consistent outcomes that are vital to content creation.
In response, we introduce FocalDreamer, a framework that merges base shape with
editable parts according to text prompts for fine-grained editing within
desired regions. Specifically, equipped with geometry union and dual-path
rendering, FocalDreamer assembles independent 3D parts into a complete object,
tailored for convenient instance reuse and part-wise control. We propose
geometric focal loss and style consistency regularization, which encourage
focal fusion and congruent overall appearance. Furthermore, FocalDreamer
generates high-fidelity geometry and PBR textures which are compatible with
widely-used graphics engines. Extensive experiments have highlighted the
superior editing capabilities of FocalDreamer in both quantitative and
qualitative evaluations.
