TOP GUESSING WITH ALT-CLICK IN BLENDER.

S4D Loop lets you preview edge loops and edge rings before you commit to a selection.

Hover over your mesh, see the loop or ring in the viewport, then click to confirm. No more blind Alt-clicking, no more selecting the wrong direction, and no more undoing selection mistakes in dense topology.

WORKFLOW

• Enter Edit Mode on a mesh object.
• Start S4D Loop from the N Panel, the Select menu, or your assigned shortcut.
• Hover an edge to preview the Loop or Ring result.
• Click to confirm the selection.
• Use Shift to add, Ctrl to remove, or continue directly with E, I, or Blender’s bevel shortcuts.
• Press Esc or Right Click when finished. Your confirmed selection remains active.

CUSTOMIZABLE HUD AND PREVIEW DISPLAY

Adjust S4D Loop to match your workflow:

• Hover preview color

• Ctrl remove-preview color

• Vertex dot color

• Face fill opacity

• Preview line width

• Face outline width

• Vertex dot size

• HUD visibility

• HUD text size and colors

• HUD background color

• Draggable HUD position

• Large mesh warning threshold

• Editable Blender keymap entries

• 4D STYLE LOOP MODE:

When supported by the mesh topology, it can continue through triangle-fan pole areas instead of stopping at them immediately. This is especially useful when working on spheres, rounded forms, poles, and mixed quad/triangle topology.

COMPATIBILITY

• Blender 5.0 and newer

• Tested for Blender 5.2

• Mesh Edit Mode workflow

• Supports multi-object Edit Mode

IMPORTANT

• S4D Loop is a focused standalone selection tool. It does not include the full Swift 4D modeling toolkit.
• S4D Loop is also included in Swift 4D, the complete S4D workflow toolkit for Blender.
• Swift 4D includes additional tools such as Volume Builder, Smart Extrude, Smart Bevel, Sweep, Spline Wrap, Deformer tools, and future workflow updates.
• If you need a complete modeling workflow rather than a dedicated loop-selection tool, consider Swift 4D.