Introduction

The number punching mandrel is a tool for engraving numbers on all kinds of parts. Indian number punching mandrels are made of plated steel. These mandrels have 9 mandrels which include: numbers 0-1-2-3-4-5-6-7-8. It should be noted that the number 6 can be used instead of 9. For correct and accurate use of this mandrel, the mandrel should be placed flat and perpendicular to the piece and the impact must be deep and sufficient. If the mandrel is not vertical and hit, there is a possibility of damage to the mandrel.