How should the tip of a pin punch be ground?

The tip of a pin punch should be ground to a flat and square shape to ensure effective transfer of force when driving out pins or similar components. This flat surface allows for optimal contact with the surface of the pin, minimizing slippage and ensuring that the force applied is directed precisely where needed. A flat and square tip can deliver a more controlled impact, reducing the risk of damaging the surrounding area or the pin itself.

A pointed and sharp tip may seem appealing for precision tasks, but it can lead to breaking or chipping during use. A rounded and smooth tip lacks the necessary contact surface to effectively drive out pins, making it less efficient for this type of application. A conical shape is not suitable either, as it provides an unstable striking point, which can result in misdirected force and increase the likelihood of damaging components or slipping off the target. Therefore, a flat and square tip is the most effective and appropriate geometry for a pin punch in automotive applications.