Hold-Down Clamp 4 CNC and others

A simple Hold-down Clamp for CNC and other tools. Simply dril a hole through the surface in the area where you constantly need to hold something down in the same area. Insert the #4-40 bolt throught the bottom. Then slide the clamp on, followed by the knob and the #4-40 nut..(nut trap knob) Tighten by hand for an extremely tight hold.