How to rotate stuff

[Lukiraq (borge)]

So I know how to change the position of the CFrame but how do I make it keep its rotation?

Part of the script that moves the model (how do I keep the rotation?):

connection=game:GetService("RunService").RenderStepped:Connect(function()
										--clone:PivotTo(CFrame.new(mouse.Hit.Position))
											clone:PivotTo(CFrame.new(Vector3.new(math.floor(mouse.Hit.X/5)*5, mouse.Hit.Y, math.floor(mouse.Hit.Z/5)*5)))
										end
									end)

Part of the script that rotates the model:

if input.KeyCode==Enum.KeyCode.Q then

clone:PivotTo(clone:GetPivot()*CFrame.Angles(0,math.rad(90),0))

									elseif input.KeyCode==Enum.KeyCode.E then
										clone:PivotTo(clone:GetPivot()*CFrame.Angles(0,math.rad(-90),0))
		
									end

Everything works, apart from the rotation. The rotating part of the script works, it rotates the model 90 degrees but then once the runService.RenderStepped fires it gets reset.

[vipkute0057 (Kute)]

part.CFrame = CFrame.new(your position)*part.CFrame.Rotation