Related Clues:

• Oil-paint container
• Cardboard cylinder
• Artist's accessory
• Waterproofing application
• Toothpaste dispenser
• Paint mixing board
• Board with a thumb hole
• Varnish basecoat
• TV, slangily, with 'the'
• You may precede it
• Paint base coat
• London Underground, with 'the'
• Inside of a paper towel roll
• Oil paint purchase
• Variety of techniques