This item is not replicated across Roblox’s server/client boundary.
WeldConstraint/Part0 and Part1 properties of a
WeldConstraint set which two
BasePart the weld connects. As soon as both properties are set and the weld is
WeldConstraint/Enabled, the weld will lock the two parts together.
If Part0 or Part1 are ever set to new parts, then the WeldConstraint will instantly link the new part. The old part will no longer be constrained.
local partA = Instance.new("Part") local partB = Instance.new("Part") partA.Position = Vector3.new(0, 10, 0) partA.Parent = game.Workspace partB.Position = Vector3.new(0, 10, 10) partB.Parent = game.Workspace local weld = Instance.new("WeldConstraint") weld.Parent = partA weld.Part0 = partA weld.Part1 = partB