Practice question · Put in order
Arrange these approaches to a ceramic armature from the least to the most intervention required after building.
- Use a removable armature withdrawn at leather-hard
- Build hollow throughout, needing no core
- Use a combustible core that burns out in firing
- Model solid, then cut apart, hollow and rejoin
Hints
- One approach requires nothing to be done afterwards.
- Cutting a finished form apart is the most intervention.
Show the answer
- Build hollow throughout, needing no core
- Use a combustible core that burns out in firing
- Use a removable armature withdrawn at leather-hard
- Model solid, then cut apart, hollow and rejoin
Why
The ordering is a practical guide: the further down the list, the more can go wrong after the form is already made. Cutting a resolved piece apart to hollow it is where most beginners lose work, which is a good argument for building hollow from the start when the form allows it.
Practise Structure, Armature and the Centre of Mass
The app has 4 more questions on this lesson, and keeps your place in the course. Sculpture I is free to start.
More questions on Structure, Armature and the Centre of Mass
- Why does lowering the centre of mass make a sculpture more stable, given the same base?
- Which are true of the condition for an object to stand?
- Complete the account of standing up.
- An armature must be removed before a model is moulded and cast, exactly as it must before firing.
- A sculpture leans until the vertical through its centre of mass reaches the edge of its base. What happens…
- Sort each design move by what it does to stability.
- Arrange these decisions in the order they should be taken.
- An armature prevents soft clay from slumping during modelling, but clay shrinks as it dries. What follows…