The pin punch should be one size _____________ than the diameter of the Hi-Lok shank that is being removed.

Using a pin punch that is one size smaller than the diameter of the Hi-Lok shank being removed is important for a few reasons. A smaller punch allows for easier entry into the hole of the Hi-Lok, minimizing the risk of damaging the surrounding material. When removing fasteners like Hi-Lok shanks, precision is critical. A smaller punch fits the center of the shank without excessive force, ensuring that it can be driven without causing deformation or other issues.

Selecting a pinch punch that is too large or equal in size could lead to difficulties in alignment and could cause the punch to bind, making the removal of the shank more cumbersome. Likewise, a longer punch may create leverage that could inadvertently damage the surrounding structure. Therefore, using a punch that is appropriately sized, specifically one size smaller, ensures efficient and safe removal of the Hi-Lok shank.