PoiBuilder 0.9.167
/ Edit / Mesh operations

Mesh operations

Topology-rewriting ops undo as a whole-mesh snapshot. Ops that create faces select their output.

All of these live on toolbar row 1. Grey means the current selection cannot feed the op.

Extrude

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Extrude
Extrude Alt + E / Shift + Move

Extrudes selected faces outward along normals, or pulls edge fins to extend boundaries.

✓ Face or edge selection Row 1

When: pull a wall, a rim, a new storey.

  • Faces: the originals are removed; you get a cap plus side quads (ProBuilder region extrude).
  • Edges: fins along the average adjacent normal.
  • Live: Shift+Move.
  • Key: Alt+E.
Shift + drag to extrude.
Shift + drag to extrude.
The cap leaves, the sides fill in.

Inset

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Inset
Inset Alt + I / Shift + Scale

Insets selected faces, creating an outer border and shrinking the inner face.

✓ Face selection Row 1

When: a window recess, a panel, a frame.

  • Planar ring around the selected faces.
  • Live: Shift+Scale on faces.
  • Key: Alt+I.
The ring it leaves, then the face lifted out of it.
The ring it leaves, then the face lifted out of it.

Loop cut

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Loop Cut
Loop Cut Unbound (rebindable)

Inserts an edge loop crossing a selected quad strip, turning corners cleanly.

✓ An edge crossing a quad ring Row 1

Select an edge that crosses a quad strip (a ring edge). Loop CutExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDelRow 1 · Mesh OperationsLoop CutUnbound (rebindable)Inserts an edge loop through the ring of quads crossed by the selected edge.Needs: An edge crossing a quad ring inserts a loop through that ring. Faces with only one ring edge (fans, boundaries) stay unsplit — a T-junction is expected. Corner turns that cannot walk fail cleanly.

The loop turns all four corners of the box.
The loop turns all four corners of the box.

Subdivide

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Subdiv
Subdiv Unbound (rebindable)

Splits selected quad faces into four sub-quads and inserts new interior edges.

✓ Quad faces Row 1

Selected quads become four. Then drag the new edge.

Subdivide, then drag the edge it created.
Subdivide, then drag the edge it created.

Merge faces

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Merge
Merge Unbound (rebindable)

Collapses adjacent coplanar faces into a single flat n-gon.

✓ Edge-adjacent faces Row 1

Edge-adjacent selected faces collapse into one n-gon per region, fan-triangulated. Coplanar is the common case; you can also merge across a crease into a bent n-gon.

Merge coplanar faces, then move them as one.
Merge coplanar faces, then move them as one.

Knife

PoiBuilder Toolbar Row 1 · Mesh Operations
ExtrudeInsetBevelBridgeConnectCollapseFill HoleKnifeLoop CutMergeSubdivWeldDetachDel
Knife
Knife Unbound (rebindable)

Cuts across faces along an interactive clicked path, splitting geometry.

✓ A face to cut Row 1

Click points across a face (edge-to-edge, or an interior hole). Enter completes the cut. Restricts points to the current face; edges can belong to more than one candidate.

Cut a face along a drawn path.
Cut a face along a drawn path.

N-gon prism

PoiBuilder Toolbar Row 2 · Shapes
New ShapeN-GonEdit Params
N-Gon
N-Gon —

Click points on any surface to draw a custom polygon base, Enter to extrude height.

✓ Nothing (always enabled) Row 2

Toolbar N-GonNew ShapeN-GonEdit ParamsRow 2 · ShapesN-GonDraws a custom polygon, then extrudes it into 3D (Enter sizes the height).Needs: Nothing (always enabled): click a polygon on a surface, Enter, drag height. Any floor plan becomes a volume.

Draw any polygon and extrude it.
Draw any polygon and extrude it.

Bevel

Own page: Bevel. Ctrl+B.

Universal rules

  • Topology-rewriting ops undo as whole-mesh snapshots. There is no per-vertex undo payload that survives insertion.
  • Ops that create faces select those faces.
  • Welds make coincident corners one selectable vertex — see Holes & joins.
Loop Cut wants a ring edge (the thing the loop crosses), not a loop edge (the thing the cut creates). Alt+click is the loop; Shift+Alt+click is the ring.