CFrame angles is not working as it was intended?

local Open = false

game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function()
	if Open == false then

for i = 1, 30 do
	wait()
	script.Parent.CFrame = CFrame.new(workspace.Hinge.Position) * CFrame.Angles(0,math.rad(i*3), 0) * CFrame.new(4,0,0)
	Open = true
	end
	else
		for i = 1, 30 do
			wait()
			script.Parent.CFrame = CFrame.new(workspace.Hinge.Position) * CFrame.Angles(0,-math.rad(i*3), 0) * CFrame.new(4,0,0)
			Open = false
		end
	end
end)

When it is gonna close, it goes back to the normal position and then does the tweening. It is because it says to set the CFrame back to the original state. But I want it to go from open to closed smoothly. How would I be able to make it so that it can close from the open position smoothly?