Cambodia · Metalwork / Casting

Khmer Buddhist Bronze Casting

ច្នៃសំណ (Chnai Samnaa)

Khmer Buddhist bronze casting uses lost-wax technique with the Bayon-period iconometric canon (12th-13th century Jayavarman VII). The ushnisha (crown protrusion) in Khmer canon is a flame-shaped lotus bud form — the most demanding element: ushnisha height must equal exactly 1/7 of total image height. The thin spire wax must be thick enough to survive investment burn-out but thin enough for bronze to fill completely — assessed by fingertip rolling of the beeswax spire.

Risk level: Critically Endangered · Cambodia national ICH list

Alternate Names
Chnai samnaa; Khmer bronze; Buddhist image casting
Geographic Center
Phnom Penh; Siem Reap (Angkor restoration context)
Community / Ethnic Group
Khmer people; Buddhist image casting tradition
Estimated Origin
Pre-Angkor period (7th century CE onward); Bayon canon from 12th-13th century
Cultural Function
Buddhist temple principal image; monastery donation merit object; Angkor restoration replica
Primary Materials
Bronze alloy (Cu 80%, Sn 20%); lost-wax investment (clay-sand); beeswax for model
Primary Tools
Wax modeling tools; clay investment tools; furnace and crucible; ladle
Process Overview
Wax model to Bayon canon (ushnisha last) -> investment -> burn-out -> bronze pour -> cooling -> mold breaking -> sprue removal -> finishing
Traditional Applications
Buddhist temple image; monastery donation
Contemporary Applications
Temple commission; museum replica; cultural heritage object
Notable Practitioners
Phnom Penh bronze casting workshops; fewer than 10 masters with Bayon canon knowledge
Key References
Jessup, H. (1995). Art and Architecture of Cambodia. Thames and Hudson; National Museum of Cambodia bronze collection; Mannikka, E. (1996). Angkor Wat.
Verification Status
Verified

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