CDA Tools Materials & Mediums Application 2 — Questions and Answers
Question 1: Which medium is best suited for creating a crackle finish effect in decorative painting?
- Crackle medium applied between two paint layers (Correct answer)
- Gel medium mixed directly into the paint
- Varnish applied over wet paint
- Retarder medium added to the base coat
Correct answer: Crackle medium applied between two paint layers
Crackle medium is applied between two paint layers and causes the top coat to crack as it dries, creating the aged appearance.
Question 2: A fan brush is most commonly used in decorative painting to achieve which effect?
- Sharp, crisp edges on geometric designs
- Soft blending of sky and cloud textures (Correct answer)
- Fine detail line work
- Stippling a rough stone texture
Correct answer: Soft blending of sky and cloud textures
Fan brushes are ideal for creating soft, feathered effects like clouds, grass, and blended sky gradients.
Question 3: What is the primary purpose of using a flow medium in acrylic decorative painting?
- To extend drying time
- To increase paint transparency and reduce viscosity without losing color strength (Correct answer)
- To add body and texture to the paint
- To make paint waterproof after drying
Correct answer: To increase paint transparency and reduce viscosity without losing color strength
Flow medium reduces surface tension and viscosity, allowing paint to spread more smoothly while maintaining pigment integrity.
Question 4: When preparing a raw wood surface for decorative painting, which step is essential before applying the base coat?
- Applying a final varnish layer
- Sanding and sealing the wood grain (Correct answer)
- Wet-sanding with 400-grit paper
- Applying a crackle medium
Correct answer: Sanding and sealing the wood grain
Raw wood must be sanded smooth and sealed to prevent the grain from raising and absorbing paint unevenly.
Question 5: Which type of palette is most effective for keeping acrylic paints wet during extended painting sessions?
- Glass palette
- Disposable wax palette
- Stay-wet palette (Correct answer)
- Wooden palette
Correct answer: Stay-wet palette
A stay-wet palette uses a damp sponge and membrane to keep acrylics workable for hours or even days.
Question 6: In decorative painting, what is the correct technique for double loading a flat brush?
- Dipping the entire brush into two colors simultaneously
- Loading one color on each side of the brush tip (Correct answer)
- Mixing two colors thoroughly on the palette before loading
- Applying one color, letting it dry, then loading a second
Correct answer: Loading one color on each side of the brush tip
Double loading places a different color on each side of the flat brush, allowing blended strokes with two colors in one pass.
Question 7: Which medium should be added to oil-based decorative paints to speed up drying time?
- Linseed oil
- Stand oil
- Japan drier (Correct answer)
- Turpentine alone
Correct answer: Japan drier
Japan drier is a siccative agent added to oil paints to accelerate the oxidation process and reduce drying time.
CDA Tools Materials & Mediums Application 2
Which medium is best suited for creating a crackle finish effect in decorative painting?