SculptForge Files

Sculpting

• New brushes: Dam Standard, Clay Buildup, Snake Hook, Trim (dynamic; Alt fills), Layer and Nudge. Keys 1-9 and 0 select the first ten brushes.
• Stroke types: dots, drag-rect, spray and lazy mouse.
• Brush alphas: round, square, noise or any grayscale image (brush_set_alpha).
• Mesh attributes shared by every tool: mask, polypaint, polygroups, hidden faces and UVs.

Masking

• Hold Ctrl while stroking to paint the mask, Ctrl+Alt to erase it. Ctrl+click the background inverts it and Ctrl+drag there clears it. Every brush and polypaint leave masked areas alone.
• Commands mask_clear, mask_all, mask_invert, mask_blur, mask_sharpen, mask_grow, mask_shrink, mask_by_cavity and mask_by_polygroup, plus a Masking section in the Tools panel.

Polygroups and visibility

• polygroup_auto_by_normals, polygroup_by_connectivity, polygroup_from_mask, polygroup_clear, polygroup_merge_visible.
• ZBrush-style visibility: Ctrl+Shift+click isolates a polygroup (click again to invert), Ctrl+Shift+Alt+click hides it, Ctrl+Shift+click on the background shows everything, Ctrl+Shift+drag hides outside a rectangle (Alt: inside). Commands hide_polygroup, isolate_polygroup, show_all, invert_visibility, hide_rect and delete_hidden. Brushes, polypaint and mask operations skip hidden faces.

Polypaint and materials

• Paint brush (P), "RGB while sculpting", colour pick (C), and the set_color, paint_fill, paint_clear and paint_from_cavity commands. Fills respect the mask by default.
• Six built-in MatCap materials (Red Wax, Clay, Skin, Chrome, White, Bronze) in a new Polypaint & Materials panel.
• Vertex colours are exported to PLY (export_ply), USD (displayColor), glTF, OBJ and GoZ.

Projects

• Native .sfproj project files (save_project, open_project, and open) hold the mesh, sculpt layers, mask, polypaint, polygroups, visibility, UVs, splats, the brush library and view settings.
• Ctrl+S / Ctrl+Shift+S save a project; OBJ export moved to File > Export OBJ.
• Save / Don't Save / Cancel prompt before losing unsaved changes, unsaved marker in the title bar, recent files, and autosave with an offer to restore after a crash.

Interchange

• ZBrush GoZ: .GoZ import and export with polygroups, mask, polypaint and UVs (quads are kept), and the GoZ bridge (goz_send, goz_receive, File > ZBrush (GoZ)) on Windows and macOS. The format follows the open-source GoB add-on; the live bridge has not yet been tested against a running ZBrush. See docs/goz.md.
• STL import (binary and ASCII) and binary STL export. Opening a .ZTL/.ZPR file now explains that the format is proprietary and suggests GoZ or OBJ/FBX.

Security and robustness

• File loaders were fuzzed with libFuzzer, AddressSanitizer and UndefinedBehaviorSanitizer (about 8 million inputs). Malformed PLY headers could request huge allocations or cast invalid values, and NaN or far-off coordinates could overflow the vertex-welding grid; all are fixed, with regression tests.
• The GoZ bridge refuses shell-unsafe paths before launching ZBrush.

Downloads

The builds are not code-signed yet. macOS: right-click the app → Open the first time. Windows: if SmartScreen appears, choose More info → Run anyway. Checksums are in SHA256SUMS.txt.