Peening - done using a small jig. This is the first of two runs through the blade - as denoted by the single ring around the widget - which cold forges the edge to about 4mm in. The second widget works at about 2mm depth.
Description:
Peening - done using a small jig. This is the first of two runs through the blade - as denoted by the single ring around the widget - which cold forges the edge to about 4mm in. The second widget works at about 2mm depth.
