Spackling paste
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Spackling paste is typically used to fill holes, small cracks and other minor surface defacements in wood, drywall and plaster. Three versions of spackling paste are currently on today's market: 1. Regular paste (heavy); 2. Lightweight; 3. Lightbodied (somewhat a combination between heavy and light).
A similar (but not identical) product is sold in Britain, Canada and Australia under the brand name Polyfilla, a term that has become a genericized trademark in colloquial speech.