ForMatter/Processes/formative/Chasing and Repoussage

proc_jewelry_chasing_repoussage

Chasing and Repoussage

formative · chasing, repoussé, repoussage, embossing (related)

highlast updated 2026-04-27

A pair of complementary techniques: repoussage pushes metal up from the back side with hammered punches, chasing refines the front with finer punches and an outline-drawing tool. The Greeks did it (the Vix Krater handles, 5th century BC), the Romans did it, the Renaissance silversmiths did it, and contemporary metalsmiths still do it. The hammer mark IS the surface — every dimple a record of one strike of one tool.

The work-piece is held in pitch (a wax / asphaltum / fine-clay mixture that's solid at room temperature, soft when warmed) so the back can be worked from below and the front from above without losing registration. Punches range from broad-faced repoussé hammers (pushing volume up) through line tracers (chasing the outline) to texturing punches. Annealing between work-cycles restores ductility — silver loses its workability after 30–50% reduction without anneal.

Scale & Tolerance

scale (mm)5 – 500
tolerance (mm)0.5
skillintermediate to advanced — the technique rewards 5–10 years of consistent practice; the masters of the past spent careers in it
costvery low equipment cost; high labor per piece

Equipment

school_shoppitch bowl, chasing pitch, repoussé and chasing punches (40+ punch set typical), chasing hammer
professionalas above plus pneumatic hammer attachment, programmable annealing kiln

Environmental

energy_usevery low
waste_streamminor metal sweeps, used pitch (recoverable by reheating)
consumablespitch, occasional new punches

Compatible materials

Fine Silver (999)

Sterling Silver (925)

Pure Gold (24 karat)

18k Yellow Gold

Copper C11000 (Electrolytic Tough Pitch)

Cartridge Brass (C26000)

Citations

url · https://en.wikipedia.org/wiki/Repouss%C3%A9_and_chasing
book · Untracht, *Jewelry Concepts and Technology* (Doubleday, 1982), chasing-and-repoussé chapter.

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Sources

Conway's Material World on raw materials, Lefteri's Making It on processes, Untracht and McCreight on metalsmithing, USDA Forest Products Lab on woods, GIA on gemstones, Schott / CoorsTek / Toray / Owens Corning datasheets, MakeItFrom for verifiable property numbers, ASM Handbook, ISO standards. Voice blocks: Barthes, Yanagi, Benjamin channeled within their philosophy; Lefteri verbatim. All cited.

v0.5 — 2026-04-27 · Phil Renato · renato.design · MIT-licensed code, CC BY-NC research content

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