Help with rays?

I'm trying to move a model to anywhere where the part is using rays but not float in the sky.

I want the model to go on top of the parts by sending a ray from the mouse but it isn't doing that,instead it just stays in one position,why?

How would I fix this?

Player = game.Players.LocalPlayer
Part = game.ServerStorage.Part
Mouse = Player:GetMouse()

ClonedPart = Part:Clone()
ClonedPart.Parent = game.Workspace


Mouse.Move:connect(function()
    ClonedPart:MoveTo(Mouse.UnitRay.Direction)--Tried using Mouse.Hit.p but it made the part float in certain spots
end)

Mouse.Button1Down:connect(function()
    NewPart = ClonedPart:Clone()
        NewPart.Parent = game.Workspace
end)