Holes & joins

Bridge two open edges, fill a loop, weld corners, detach a piece into its own object.

Bridge

PoiBuilder Toolbar Row 1 · Mesh Operations

Bridge Alt + B

Connect two boundary open edges with bridging quad faces.

✓ 2 open boundary edges Row 1

Connect two boundary (open) edges with a face. Alt+B.

Select exactly two open edges. If a button is grey, one of them is welded interior.

Connect

PoiBuilder Toolbar Row 1 · Mesh Operations

Connect Unbound (rebindable)

Insert an edge joining edge midpoints or selected vertices.

✓ Edges or vertices Row 1

Insert an edge joining edge midpoints or selected vertices.

Collapse

PoiBuilder Toolbar Row 1 · Mesh Operations

Collapse Unbound (rebindable)

Selected vertices, edges or faces collapse to a single geometric center.

✓ Vertices, edges, or faces Row 1

Selected vertices, edges or faces collapse to a single point.

Fill Hole

PoiBuilder Toolbar Row 1 · Mesh Operations

Fill Hole Unbound (rebindable)

Cap an open boundary loop with a new polygon face.

✓ An open boundary Row 1

Cap an open boundary loop with a new face. Select the loop (or use BoundaryRow 3 · Selection SuiteBoundaryUnbound (rebindable)Selects the open boundary edges.Needs: A PBMesh) first.

Weld

PoiBuilder Toolbar Row 1 · Mesh Operations

Weld Unbound (rebindable)

Selected vertices snap to their centroid and weld into one shared vertex group.

✓ 2+ vertices Row 1

Selected shared-vertex groups snap to their centroid and become one group. Positions move; indexes do not. After a weld, those corners select as one vertex — dragging will not tear them apart.

Delete

PoiBuilder Toolbar Row 1 · Mesh Operations

Del Unbound (rebindable)

Deletes selected faces, edges, or vertices from the mesh.

✓ Face selection Row 1

Deletes selected faces. Orphans compact. Look through the opening and you should see the interior.

Detach

PoiBuilder Toolbar Row 1 · Mesh Operations

Detach Unbound (rebindable)

Detaches selected faces into a separate new PBMesh sibling object.

✓ Face selection Row 1

Selected faces become a new PBMesh sibling. Undo restores them to the original (node undo, not a mesh snapshot). Move the new object away.

Use cases

Close a subtracted doorway that went too far

Edge mode → BoundaryRow 3 · Selection SuiteBoundaryUnbound (rebindable)Selects the open boundary edges.Needs: A PBMesh → Fill HoleRow 1 · Mesh OperationsFill HoleUnbound (rebindable)Caps open boundary loops with a new face.Needs: An open boundary. Then inset and extrude if you still want a recess.

Split a building into chunks

Face-select a wing. Detach. Origin stays; move the new node. Collision follows the new mesh.

Stop a corner tearing

If a drag splits a corner that should stay sharp-together, those vertices are not welded. Select them (vertex mode) → Weld.

Bridge needs two open edges. Interior edges already have two faces; the button stays grey. Delete a face first if you meant to bridge across a hole.