ZBrush Tip: ZRemesher Guides for Predictable Edge-Loop Topology

ZRemesher Guides let you steer topology into clean, predictable loops for deformation and detailing. Here’s how to get reliable results, fast.

• Use cases where Guides shine:
  • Faces: concentric eyelid rings, mouth loops, nasolabial flow, ear helix/antihelix routing.
  • Characters: shoulder–elbow–wrist lines, hip–knee–ankle loops, fingers and toes.
  • Hard surface: panel boundaries, chamfer rails, and strategic flow redirects around cutouts.

• Setup and drawing:
  • Duplicate your SubTool before remeshing (SubTool > Duplicate) to preserve a projection source.
  • Select the ZRemesher Guides brush, then draw continuous curves where you want edge loops. Close rings around openings (eyes, mouth, sockets) for stable loops.
  • Enable X symmetry before drawing to mirror guides, or toggle ZRemesher’s Use Symmetry option for the solve.
  • Keep guides sparse and intentional. Too many short, crisscrossing curves reduce predictability—favor long, clean paths.
  • Edit guides by dragging them; Alt+click a guide to delete it. Ctrl+tap empty canvas to clear all guides.

• Key ZRemesher settings for predictable loops:
  • Target Polygon Count: start low (3–8k) to test flow. Iterate, then increase for detail once the topology reads well.
  • Curve Strength: 40–80 for strong obedience to guides. Lower if the mesh distorts to chase curves.
  • Adaptive Size: 0–10 for even grid (great on mechanical parts); 30–60 for organic density bias near detail.
  • Keep Groups + Detect Edges: respects PolyGroup borders and hard edges. Set Smooth Groups low (0–10) to keep crisp boundaries.
  • Freeze Border: prevent shrinkage on open edges (mouth bags, garment hems, hard-surface panels).
  • Use Polypaint: paint density (darker = denser) and set Color Density to localize tessellation where needed.

• Workflow that sticks:
  • Block guides first for primary rings (eyes, mouth, joints), then add secondary redirection lines to steer poles away from high-deformation zones.
  • Run ZRemesher while holding Alt for an alternative solution; try a few passes to find the cleanest layout.
  • For hero features (eyes, mouth, fingers), isolate as PolyGroups and close guide rings completely to lock in circular edge flow.
  • After a good solve, subdivide and use Project All to recover sculpt detail from your original duplicate. Repeat subdivide/project per level.
  • For hard edges: crease important borders first, enable Keep Creases, Adaptive Size low, then ZRemesh for tight chamfer-ready loops.

• Troubleshooting quick hits:
  • “Loops won’t stick”: increase Curve Strength; ensure guides are continuous and not fighting PolyGroup borders.
  • “Pinching or swirl”: reduce guide density, lower Adaptive Size, and redirect with one or two long correction guides.
  • “Uneven density”: use Polypaint density or lower Adaptive Size; verify Target Polycount is sufficient.
  • “Border collapse on openings”: enable Freeze Border and Keep Groups; confirm closed rings around apertures.

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