What are the best methods for creating seamless joints in modular resin sculptures?

Creating seamless joints in modular resin sculptures requires meticulous preparation and precise execution. Begin by dry-fitting all components to identify potential gaps and alignment issues. Use high-quality epoxy putty or resin pastes specifically formulated for gap filling, applying them sparingly to avoid excessive sanding later. Employ sculpting tools to texture the fresh filler material, matching the surrounding surface patterns before it fully cures.

The sanding process proves critical for achieving invisibility. Start with coarse grit sandpaper (80-120 grit) to remove excess material, progressively moving to finer grits (up to 1000+ grit) for polishing. Wet sanding helps prevent dust inhalation and produces smoother results. For complex curves, use contoured sanding tools or flexible sanding pads to maintain the sculpture's original shape.

Advanced techniques include using liquid resin with identical pigmentation to the original sculpture for minor gaps, ensuring perfect color matching. Some artists employ vapor polishing with solvent fumes for acrylic-based resins or specialized UV-resins that cure clear for hairline cracks.

Always finish with comprehensive polishing using progressively finer compounds, followed by protective clear coating to unify the surface texture. The best results come from combining mechanical joining strength with artistic finishing techniques, creating sculptures where the modular construction becomes undetectable to both eye and touch.