Related Clues:
- Crevice filler
- Sofa leveler
- Wobbly table stabilizer
- It just fills up space
- Slender wedge of wood
- Carpentry wedge
- Tapered slat for leveling
- Carpentry spacer
- Eg, Fermat or Napier
- Material stopping leaks
- Thin strip of metal
- Material for making airtight or watertight
- Filler used to close a gap
- Material used for an airtight or watertight join
- It should stop worker going on main line