Powder resins showing sticking or corrosion in the box should be:

• Dried and reused

• Disposed of

• Mixed immediately

Before gluing, surfaces must be:

• Polished

• Clean and free of grease or varnish

• Painted with primer

How should plywood surfaces be prepared for gluing?

• Sanded lightly to remove glazing

• Painted with dope

• Roughened deeply

How should timber surfaces be prepared for gluing?

• Scraped or roughened to form a key

• Coated with oil

• Smoothed to mirror finish

What happens if sanding is excessive before gluing plywood?

• Improves adhesion

• Weakens the joint fit

• Seals the pores

Why should joint surfaces not be handled after preparation?

• Finger oils reduce adhesion

• Causes splinters

• Alters grain direction

What conditions affect the pot life of synthetic resin adhesives?

• Humidity and glue type

• Temperature and hardener ratio

• Surface texture only

What temperature range should timber be allowed to reach before gluing?

• Room temperature

• 0°C

• 100°C

Why should timber be kept clear of radiators before gluing?

• Prevent overheating

• Avoid softening glue

• Prevent uneven drying

How should adhesive be applied?

• To both surfaces of a joint

• To one surface only

• Only on edges