These abrasive block is used prior to free-hand peening using the narrow-faced anvil. Creating a mat finish on peened edge of the blade, allows each hammer blow to be easily seen and therefore it’s much easier to follow the peening progress. It greatly improves the accuracy of free hand peening.
These blocks are also good for polishing the hammer and the anvil face, removing rust and dirt from the blade’s surface prior to peening and for maintaining other tools.
This is an emery powder embedded in a rubber matrix measuring 8.5x5x2cm.