Answer:
The sharp slim blade, that cuts the wind. What is it?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
The more holes you cover the lower it goes.
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
What did the piece of wood say when he saw the screwdriver and screws approaching?