Oil Painting Varnishes And Mediums
Test your knowledge of varnishes, oils and thinners used in the craft of oil painting.
- 1.Which of the following is NOT a plant-derived gum/resin?
- A.
Damar
- B.
Mastic
- C.
Shellac
- D.
Copal
- 2.Which of the following is a function of varnish in a painting medium?
- A.
Improve tack
- B.
Impart even gloss
- C.
Retain wet appearance of colors
- D.
All of the above
- 3.Rags saturated with linseed oil can spontaneously combust, even without an outside flame or heat source.
- A.
True
- B.
False
- 4.Stand oil is:
- A.
Linseed oil that has been heat-polymerized in an oxygen-starved environment
- B.
Linseed oil that has been heat-polymerized in an oxygen-rich environment
- C.
A blend of oils thickened by exposure to the sun
- D.
Linseed oil that has been left to stand until thick
- 5.Retouch varnish can be applied to an oil painting that is dry to the touch, but not yet completely (6+ months) dry.
- A.
True
- B.
False
- 6.Which of the following is NOT a desirable property of a picture varnish?
- A.
Not removable
- B.
Removable
- C.
Optically clear
- D.
Neutral in color
- 7.What is the purpose of alkali refinement of linseed oil?
- A.
Improve shelf stability
- B.
Remove free fatty acids and mucilage
- C.
Render expeller-pressed oil suitable for artistic use
- D.
All of the above
- 8.Which of the following resins cannot be prepared as a painting varnish at room temperature?
- A.
Damar
- B.
Styrene
- C.
Copal
- D.
Mastic
- 9.Matte varnish can be applied over gloss varnish.
- A.
True
- B.
False
- 10.Cobalt drier is a:
- A.
Top drier
- B.
Through drier
- C.
Bottom drier
- D.
Extender
- 11.Alkyd resins are made from vegetable oils.
- A.
True
- B.
False
- 12.Working in a "couch" of medium refers to:
- A.
Painting into a thin layer of painting medium on the canvas
- B.
Mixing into a large pile of medium on the palette
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