rojo/.cursor/rules/roblox/en-us/physics/constraints/rigid.md

title	description
Rigid	RigidConstraint connects two attachments with zero offset.

A Class.RigidConstraint connects two Class.Attachment|Attachments or Class.Bone|Bones and ensures they stay in the same relative position/orientation to each other. This flexibility gives it additional functionality beyond Class.WeldConstraint, such as attaching accessories to Class.Attachment|Attachments on a character rig.

To attach two `Class.BasePart|BaseParts` together, versus two `Class.Attachment|Attachments` or `Class.Bone|Bones`, see [WeldConstraint](../../physics/constraints/weld.md).

When creating a Class.RigidConstraint using Studio's Constraint button, the tool behaves differently depending on whether you click on existing Class.BasePart|BaseParts, Class.Attachment|Attachments, or Class.Bone|Bones after the tool is activated:

• Clicking on an existing Class.BasePart creates a new Class.Attachment upon it as the intended Class.RigidConstraint.Attachment0 or Class.RigidConstraint.Attachment1.
• Clicking on an existing Class.Attachment or Class.Bone uses that instance as the intended Class.RigidConstraint.Attachment0 or Class.RigidConstraint.Attachment1.

Following the second valid click, a new Class.RigidConstraint is created to connect the two new attachments. If either the first or second click is not made on a Class.BasePart, Class.Attachment, or Class.Bone, the workflow is canceled and no constraint is created.