Keep the shape
Only the corners stay: points in the middle of flat faces and along straight edges go, and every flat face is filled again from its outline. The web of slivers a boolean leaves is gone, and nothing moves.
Tools · Tools tab
Mend a model
before it prints
Repair mends what would not print: it fills holes, drops slivers and turns faces the right way round. Rebuild goes further and makes the surface again — keeping the shape, or starting from scratch to mend anything.
Repair§ 01
- Click Repair on the Tools tab.
- If everything on the plate is already watertight, the status bar says so and nothing changes.
- What a quick local mend cannot close goes on to a second, stronger pass. Its result is kept only if it comes back measurably less broken; otherwise nothing changes.
Rebuild§ 02
- Select the object and click Rebuild on the Tools tab (Advanced mode).
- Choose Keep the shape or From scratch, and the options under it.
- Click Rebuild.
Merge faces
Takes faces that are flat to within 0.01 mm as one — walls joined from separate parts become one wall.
Even triangles
Cuts the result into triangles of about one size, for Smooth, a deform or a texture.
From scratch
Remakes the surface on a voxel grid and mends anything, even a model that passes through itself. Detail is the number of voxels across the model; the smallest feature that survives is one voxel.
Good to know§ 03
- Export reports whether a model is watertight before it writes the file.
- Keep the shape changes no size and no position: it only takes away what adds nothing.
- From scratch costs fine detail. Raise Detail for a small or finely made part.
- Simplify on the Edit tab is the partner of Rebuild: it cuts the triangle count of a dense import while keeping the shape.
More tool guides: Cladding · 3D textures · Windows · Doors · Mold · Voronoi · Connectors · Align to face · Fill up · Pivot · Kit sprue · Emboss · History and versions · Printer profile · Download 3DFastCraft, free