Knife Help

Shortcut: Ctrl+5, Ctrl+K

Quick Shortcut: K

The Knife tool allows you to cut into the existing geometry similarly to Blender’s Knife tool.

Note: the Knife tool will only cut into existing geometry; it will not create new vertices, edges, or faces.

If nothing is selected, the first insert will

• insert a new detached vertex if the mouse is hovering a face,
• split the hovered edge,
• select the hovered vertex, or
• set a knife starting point (does not create a new vertex).

The subsequent insertions will cut in new edges, splitting faces and edges accordingly.

Note: an existing face will not be split until there are distinct entrance and exit vertices. Until the face can split, the created vertices and edges will be non-manifold (possibly detached) geometry.

Creating

Ctrl+LMB, Ctrl+LMB+Double	:	insert geometry connected to selected geometry
E	:	resets the knife starting point

Selecting

LMB+Click, Shift+LMB+Click	:	select geometry
LMB+Drag, Shift+LMB+Drag	:	paint geometry selection
Ctrl+Shift+LMB+Click	:	select along shortest path
A	:	select / deselect all
Alt+A	:	deselect all

Transforming

G	:	grab and move selected geometry
LMB+Drag	:	grab and move selected geometry under mouse
Shift+S	:	smooths edge flow of selected geometry

Other

Backspace, Delete, X	:	delete/dissolve/collapse selected
V	:	rip selected edge
Alt+V	:	rip and fill selected edge