Help with Mouse?

I was making a building tool, and then I stumbled upon a problem the Display part follows the camera due to Mouse.Origin,I want the part to follow the mouse on another part's surface(kinda like the Stamper tool).How Would I do that? Please explain if you manged to find out how.

Player = game.Players.LocalPlayer
Tool = script.Parent
Mouse = Player:GetMouse()
Displayed = true
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	Tool.Equipped:connect(function(_)
		DisplayPart = Instance.new("Part",Workspace)
			DisplayPart.Anchored = true
			DisplayPart.Transparency = 0.5
			DisplayPart.CanCollide = false
				while Displayed do
					wait(0.1)
					MousePosition = Mouse.Origin
					DisplayPart.CFrame = CFrame.new(MousePosition.X,MousePosition.Y,MousePosition.Z)
				end
					
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		LeftClick = Mouse.Button1Down:connect(function(_)
				local Part = Instance.new("Part",Workspace)
					Hit = Mouse.Hit
						Part.Position = Vector3.new(Hit.X,Hit.Y,Hit.Z)
-------------------------------------					
		Tool.Unequipped:connect(function(_)
			LeftClick:disconnect()
				end)
			end)
		end)

Mouse.Origin should be Mouse.Hit, Mouse.Hit isn't where You clicked, it's the Mouse's location in 3d space, at any time.