Otics 78 impact prick punch test

(6) sample marks were tested. The Model 78 was used in both a 1″ stroke (less force) and the 2″ stroke (more force). Different PSI settings

were tested to show varying depths achievable. The “P90” prick punch was used on test 1‐4 which is the most commonly used. The 120*

punch which provides a wider indent with less depth, and the 60* punch which provides deeper penetration but less material displacement

were also tested for examples