Practice question · Sort into groups
Sort each casting material by its principal characteristic.
Groups: Fragile and matt · Hard and pigmentable · Heavy and weather-resistant
- Concrete
- Needs reinforcement at any scale
- A chalky white surface
- Takes fillers and pigments readily
- Polyester resin
- Plaster
Hints
- Each material has a characteristic that decides where it can be used.
- Only one of the three is suitable outdoors without further treatment.
Show the answer
Fragile and matt: Plaster, A chalky white surface
Hard and pigmentable: Polyester resin, Takes fillers and pigments readily
Heavy and weather-resistant: Concrete, Needs reinforcement at any scale
Why
The third column is the only one that survives outdoors, which is usually the decision that settles the material. Plaster is a studio and exhibition material; resin is durable but degrades in ultraviolet; concrete is what goes outside and brings a weight problem with it.
Practise Positives and the Multiple
The app has 5 more questions on this lesson, and keeps your place in the course. Sculpture I is free to start.
More questions on Positives and the Multiple
- In a properly declared edition of ten bronzes, what distinguishes the first cast from the seventh?
- An edition is declared at ten casts. How many of them are equally the work?
- Slip casting controls wall thickness by how long the slip is left standing in the mould.
- Which are true of exotherm in resin casting?
- Complete the account of positives and editions.
- A cast bronze is classed as allographic rather than autographic. What follows from this distinction when…
- Arrange the stages of producing a cast positive in order.
- A cast bronze from a reusable mould is autographic in the same strict sense as a carved marble.