From DT Online
Sandbags are usually circular, made from thick leather stitched together and filled with sand. They are use for supporting work or tools during various Beaten Metalwork processes (e.g. Hollowing or Engraving).
Features and Uses
When used for Hollowing, the Sandbag can be hollowed out initially using either a Bossing Mallet or directly by beating it with with the Planishing Stake to be used later to true the metal being formed.
An alternative to Sandbags for some processes would be to beat the metal into a concave shape carved into the end grain of timber - known as a Hollowing Block.
|Leather Sandbag/cushion, 180mm/8", 639g - (999 092)||6" Jewellers Double Stitched Leather Sandbag.||18" Leather Sandbag for Metal Forming Panel Beating||Wooden Doming Block and Punches.||25 Piece Dapping, Doming Hardened Steel Punch & Block Set.|