Sinking (metalworking)

Steel doming block

Sinking, also known as doming, dishing or dapping, is a metalworking technique whereby flat sheet metal is formed into a non-flat object by hammering it into a concave indentation. While sinking is a relatively fast method, it results in stretching and therefore thinning the metal, risking failure of the metal if it is 'sunk' too far.

Sinking is used in the manufacture of many items, from jewellery to plate armour.

References

Rupert Finegold and William Seitz. Silversmithing. Krause; 1983. ISBN 0-8019-7232-9
Price, Brian R. Techniques of Medieval Armour Reproduction. Boulder, CO: Paladin Press, 2000. ISBN 1-58160-098-4

Metalworking

Forming, fabrication, and finishing

General	Fabrication Piece work Sheet metal

Forming processes	Coining Drawing Electrohydraulic forming Electromagnetic forming Explosive forming Forging Hydroforming Progressive stamping Punching Rolling Sinking Spinning Swaging Tube bending

Joining processes	Brazing Crimping Riveting Soldering Welding

Finishing processes	Anodizing Galvanizing Heat treating Mass finishing Patination Peening Plating Polishing

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