Pen tip peening machine

A peening machine, comprising:

• a first disc having grooves on a periphery of the disc, wherein the grooves extend axially on the periphery and the grooves are configured to hold a first workpiece;
• a second disc having grooves on a periphery of the disc, wherein the grooves extend axially on the periphery and the grooves are configured to hold a second workpiece, wherein the first and second discs are coaxially aligned with each other, and wherein a groove of the first disc is positioned to be aligned with a groove of the second disc:
• a first reciprocating push rod positioned to be aligned with each groove individually of the first disc as the first disc rotates;
• a second reciprocating push rod positioned to be aligned with each groove individually of the second disc as the second disc rotates, wherein the second reciprocating push rod is coaxially aligned with the first reciprocating push rod;
• and
• a reciprocating peening needle positioned perpendicular to the first and second reciprocating pushrods.