Ambalangoda ritual mask finishing: wild Dorana oil resin extraction and polymerization?
How do master woodcarvers tap wild Dipterocarpus glandulosus trees for Dorana oil and boil it with dammar resin to seal Kaduru wood masks against wood rot?
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3 Answers from travellers
Sealing traditional Ambalangoda ritual masks (Kolam and Sanni) against tropical humidity requires wild Dorana oil, an oleoresin tapped from the massive rainforest tree Dipterocarpus glandulosus. Artisans cut a wedge cavity into the lower tree trunk and ignite a brief fire to stimulate balsamic resin secretion. The viscous amber crude oil is strained and simmered slowly over gentle charcoal embers with crushed Dummala resin (Shorea robusta). The mixture polymerizes into a natural, flexible varnish that penetrates porous Kaduru wood (Alstonia scholaris), sealing mineral pigments with a non-yellowing, waterproof satin sheen.
Synthetic polyurethane spray lacquers trap interior moisture inside unseasoned wood, causing white mold blooming and paint flaking within two years.
Dorana trees are endemic and protected under forest conservation statutes; harvesting resin requires customary permits granted to traditional artisan guilds.
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