Practice question · Select all that apply
Which are true of alginate as a moulding material?
Hints
- Three describe its use and its limit; one describes silicone.
- Alginate shrinks and degrades rapidly once set.
Show the answer
- A. It is the standard material for life casting
- B. It sets in minutes and is safe against skin
- C. It degrades within hours, so a positive must be cast almost immediately
Why
The fourth belongs to silicone. Alginate is single-use in practice because it shrinks and degrades within hours of setting, which makes it ideal for the one thing it is used for, taking a mould from a living body quickly and safely, and useless for anything requiring an edition.
Practise Moulds I: Typology
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 Moulds I: Typology
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