Seamline Rip

New in 2026.1

The Seamline Rip Tool allows part or all of a sewing line to be designated as a rip area, and simulates the effect of the actual fabric opening and fraying.

After creating an Seamline Rip on a sewing line of a 3D garment or 2D pattern, adjust the Rip and Fray properties to create effects such as seam rupture, damaged garments, and worn fabric details.

Create Seamline Rip

Partial Creation

A Seamline Rip can be created on a Sewing Line.

Select the Seamline Rip Tool from the 3D Toolbar.
Move the mouse over the sewing line where the Rip object will be created on the 3D garment or 2D pattern.
→ A Preview Point appears at the position where creation is available.
Click on the sewing line to set the Start Point.
→ The Start Point is also displayed at the corresponding position on the Paired Sewing Line.
Move the mouse along the same sewing line.
→ A Preview Line is displayed from the Start Point to the current position.
Click another position on the sewing line to set the End Point.
→ A green Rip object is created between the Start Point and End Point.
The created Seamline Rip remains selected.
→ The Seamline Rip properties are displayed in the Property Editor.

Batch Creation

Activate the Sewing Tool and select all Sewing Lines where Seamline Rips will be created.
Right-click to open the Sewing Line Context Menu.
Run Add Seamline Rip.
Select the Edit Rip tool and confirm that Seamline Rips have been created to fully cover the selected Sewing Lines

📝 Note:

Seamline Rip can only be created on a Sewing Line. A single Rip object can only be created within one Sewing Line and cannot continue across another connected Sewing Line.
When a Rip object is created by the user, a Paired Seamline Rip is also created and synchronized on the opposite Sewing Line corresponding to the source Sewing Line.
However, the properties that control ripping can be set individually. A Rip object cannot be created multiple times on the same Vertex of the same Sewing Line.

Edit Seamline Rip

Created Rip objects can be edited by adjusting their length, moving their position, deleting them, or editing their properties.

Select the Edit Rip Tool.
Select the Rip object to edit.
→ The Start Point, End Point, and Line of the selected Rip are highlighted.
→ The Paired Seamline Rip is also displayed.
Drag the Start Point or End Point to adjust the length.
Drag the Rip Line to move its position along the same Sewing Line.
Release the mouse button to confirm the change.

📝 Note:

When the length or position of a Rip is changed, subsequent simulation is performed based on the updated area.
If simulation is run after deleting a Rip, the previously ripped section is merged again.

Set Seamline Rip Properties

When an Seamline Rip is selected, Rip and Fray properties can be set in the Property Editor.

Rip Properties

Rip Properties define the conditions for the specified Seamline Rip area to tear in real time in response to force applied during simulation.

Name	Description
Activate	Enables the ripping effect of the Rip. When set to On, ripping occurs in real time once a certain force threshold is reached.
Restore on Deactivation	When simulation is run after turning Activate Off, the previously ripped area is merged again while keeping the Rip object.
Rip Resistance	Rip Resistance controls the seam’s resistance to tearing. It is calculated internally from Yield Strength, the force threshold at which damage begins, and Damage Rate, the rate at which damage accumulates over time. Lower values make the seam easier to tear; higher values increase its resistance to sustained force.

Fray Properties

Fray Properties are used to represent fabric wear or fraying around the outline of the ripped Seamline.

Name	Description
Preset	Saves the Fray properties as a ZFRAY file so they can be reused. The Preset list is synchronized with the corresponding folder. Path: C:\Users\Public\Documents\CLO\CLO Assets\Fabric\Fray ※ Note: The Preset List is synchronized with the ZFRAY files in the folder.
Common	Activate	Controls whether all Fray components are enabled. All other Fray elements are displayed only when this is turned on. It is recommended to keep this option enabled.
	Generation	Fray Distance Threshold (mm)	Defines the "Distress Region": when the two sides of the rip surface are below this threshold, it is considered a "Distress Region" rather than fully ripped.
		Bridge Probability	Probability that, within the "Distress Region" a fray will remain a bridge as a Loose Warp rather than be generated as a Fuzz.
		Root Offset (mm)	How far the root is offset into the edge it lives on.
	Variation	Thickness Variation	Randomness added to fray thickness.
		Arch Variation	Randomness added to "Arch" parameter in certain fray types.
		Wavy Variation	Randomness added to "Wavy" for certain fray types.
	Gravity	Gravity Gravity	Sets the strength of the gravity effect.
		Gravity Direction X	X-direction for gravity.
		Gravity Direction Y	Y-direction for gravity.
		Gravity Direction Z	Z-direction for gravity.
	Material	Use Fabric Material	Apply the Fabric's material properties to all Fray objects.
Fuzz	Activate	Sets whether to draw Fuzz on the screen. This works only when Activation under Common is turned on.
	Basic	Density (/mm)	How many frays to generate per millimeter?
		Thickness (mm)	Base thickness of the fray.
		Coverage (%)	Randomly thins out the thread generation.
		Length (mm)	Length of the generated fray.
		Length Variation	Defines how much the length parameter varies by.
		Taper	Defines the ending radius of the fray.
		Taper Variation	Amount of randomness added to the taper field.
		Segments	Maximum number of segments used to model the fray.
	Orientation	Lean Probability	Defines the likelihood that a fray will have the "lean" effect added. Basically a deform leaning the fray to the left with a strength depending on the internal value.
		Lean Strength	Lean strength, if a fray gets the lean effect, it will be blended with a constant direction (towards the other side of the rip, generated once at generation time).
		Rotation (°)	Rotates the strand about its generation axis.
		Grain Angle (°)	This is supposed to rotate the frays at an angle within the plane of the seam.
		Eyelash Rolling	Intended to give an eyelash curling effect, curling the entire fray geometry.
	Curl	Curliness	Defines how many times the fray tries to spiral.
		Curling Width	Defines how wide the spiral curve of the fray will get.
		Damping Power	Damp out the curvature at the end of the fray.
		Spiral Noise Strength	Strength of noise added to the angular curling of the fray.
		Spiral Noise Frequency	Frequency of the noise applied to the angular curling of the fray.
		Radial Noise Strength	Strength of the noise added to the radial curling of the fray.
		Radial Noise Frequency	Frequency of the noise added to the radial curling of the fray.
		Height Noise Strength	Strength of noise added to the spacing of segment knots.
		Height Noise Frequency	Frequency of noise added to the spacing of segment knots.
	Clumping	Clumping Radius	Number of strands per clump, should be an integer value.
		Clumping Damping Power	Clumping strength.
	Material	Color	Sets the base color of the fray strands.
		Glossiness	Controls the strength and sharpness of surface reflections.
		Softness	Controls the perceived softness of the fray strands.
Loose	Warp	Activate	Sets whether to draw Loose Warp on the screen. This works only when Activation under Common is turned on.
		Basic	Density (mm)	Number of loose warp threads to generate per edge.
			Thickness (mm)	Base thickness of the fray.
			Segments	Maximum number of segments used to model the fray.
		Shape	Asymmetry	Asymmetry of the wavy fray.
			Arch	Arch amplitude of thread.
			Wavy Strength	Amplitude of the waves, centered on fray.
			Frequency	Frequency of the fray waves.
		Material	Color	Sets the base color of the fray strands.
			Glossiness	Controls the strength and sharpness of surface reflections.
			Softness	Controls the perceived softness of the fray strands.
	Weft	Activate	Sets whether to draw Loose Weft on the screen. This works only when Activation under Common is turned on.
		Basic	Density (mm)	How many loose wefts to generate per edge pair.
			Thickness (mm)	Base thickness of the fray.
			Segments	Maximum number of segments used to model the fray.
		Shape	Asymmetry	Asymmetry of the wavy fray.
			Arch	Arch amplitude of fray from the seam edge.
			Wavy Strength	Amplitude of the waves, centered on fray.
			Frequency	Frequency of the fray waves.
		Material	Color	Sets the base color of the fray strands.
			Glossiness	Controls the strength and sharpness of surface reflections.
			Softness	Controls the perceived softness of the fray strands.
Exposed	Generation	Density (/mm)	Density of exposed weft parameters.
		Exposed Weft Snapping Probability	Probability with which an exposed weft will stay an exposed weft rather than "snap" and become an exposed warp
	Clumping	Clumping Radius (mm)	World space distance along the seam that determines clumps (all strands within this distance will clump together).
		Clumping Strength	Strength of clumping effect
	Weft	Activate	Sets whether to draw Exposed Warp on the screen. This works only when Activation under Common is turned on.
		Basic	Thickness (mm)	Base thickness of the fray.
			Segments	Maximum number of segments used to model the fray.
		Shape	Arch	Arch controls the height of the arch formed by the exposed weft curves.
			Asymmetry	Asymmetry of the wavy fray.
			Wavy Strength	Amplitude of the waves, centered on fray.
			Frequency	Frequency of the fray waves.
		Material	Color	Sets the base color of the fray strands.
			Glossiness	Controls the strength and sharpness of surface reflections.
			Softness	Controls the perceived softness of the fray strands.
	Warp	Activate	Sets whether to draw Exposed Weft on the screen. This works only when Activation under Common is turned on.
		Basic	Thickness (mm)	Base thickness of the fray.
			Segments	Maximum number of segments used to model the fray.
		Shape	Length (mm)	Length of the generated fray
			Length Variation	Defines how much the length parameter varies by
			Taper	Defines the ending radius of the fray.
			Taper Variation	Amount of randomness added to the taper field.
		Curl	Spiral Noise Strength	Strength of noise added to the angular curling of the fray.
			Spiral Noise Frequency	Frequency of the noise applied to the angular curling of the fray.
			Radial Noise Strength	Strength of the noise added to the radial curling of the fray.
			Radial Noise Frequency	Frequency of the noise added to the radial curling of the fray.
			Height Noise Strength	Strength of noise added to the spacing of segment knots.
			Height Noise Frequency	Frequency of noise added to the spacing of segment knots.
		Material	Color	Sets the base color of the fray strands.
			Glossiness	Controls the strength and sharpness of surface reflections.
			Softness	Controls the perceived softness of the fray strands.

Produce Rip Result

During simulation, force above the threshold can be applied to tear the prepared Seamline Rip area.

Prepare a garment with a Rip applied.
Select the Seamline Rip object, then turn on the Activate in the Property Editor.
Run simulation.
Apply tension to the sewing line using an external force such as Pinching.
When the tension satisfies the Rip Resistance condition, the sewing line is ripped.
Check the ripped result and the Fray expression.
While simulation is running, adjust the Fray properties to refine the visual result.

📝 Note:

If the length or position of the Rip is changed, or if the Rip is deleted during simulation, the running simulation stops.
Rip and Fray property values can be changed during simulation.
If the result is not as intended, use the Edit Rip Tool to adjust the length or position, then run simulation again.

Restore the Ripped Area

The ripped state can be restored to the original sewn state.

Select the Seamline Rip.
Check the Restore on Deactivation option.
Turn off Activate.
Run simulation.
→ The ripped sewing line is restored to its original state.

📝 Note:

Restore Rip restores the ripped result while keeping the Rip object.
Delete Rip deletes the Rip object itself.

How can we help you?

Search

New in 2026.1

Create Seamline Rip

Partial Creation

Edit Seamline Rip

Set Seamline Rip Properties

Rip Properties

Fray Properties

Produce Rip Result

Restore the Ripped Area

Comments

How can we help you?

Search

New in 2026.1

Create Seamline Rip

Partial Creation

Edit Seamline Rip

Set Seamline Rip Properties

Rip Properties

Fray Properties

Produce Rip Result

Restore the Ripped Area

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