Is there a way to slow down a block when using a script to move it?

I have made a saw which goes to one point then comes back. But for some reason it is really fast.

Here is the script:

BdyP = game.Workspace.Saw.Blade.BodyPosition

start = game.Workspace.Saw.Start
finish = game.Workspace.Saw.Finish


while true do
   BdyP.Position = start.Position
   wait(2)
   BdyP.Position = finish.Position
   wait(2)
end

Any info will help! Thanks