[WeldConstraint and CFrame.Angles] Why do all the parts rotate instead of one part?

I wanted all the parts to rotate separately. But for some reason, the script rotates everything together. http://gyazo.com/63ca0888bdd366fd6573bd791ecd471f

I fixed all the colored parts on the main one using the WeldConstraint. And the main part I attached to HumanoidRootPart. https://gyazo.com/5f9c407f71b73a0860cf668d7aa5b5ae

while true do
	script.Parent.CFrame = script.Parent.CFrame * CFrame.Angles(0.1,0.1,0.1)
	wait()
end

Weld Constraints Weld Parts Together , or basically Make them Stuck together or make them Apart of each other. That is why when you spin one , the other one spins !

The Solution to this would be using something called Moter6Ds

This Can Make Movable Joints Between Connected Parts !

Read Up More About This On : https://developer.roblox.com/en-us/api-reference/class/Motor6D

They Are similar to welds , because you can attach things to other things , but they allow you to make the things that are attached to something else be "movable" by themselves !