Related Clues:

• Type of pigeon
• Wood that's Spanish for 'raft'
• Art medium
• Model builder's wood
• Pot ingredient?
• Golem guts
• Float material, perhaps
• (K) Model material
• Potter's stuff
• Model-plane material
• Modeling stuff
• Modeler's need
• Pot composition
• Molding material
• See 17 Across