Crafting Resin and Polymer Clay

Question 1

What are the two main components of epoxy resin?

Accepted Answer

Resin and hardener (curing agent)

Answer

Epoxy resin requires mixing a resin part (Part A) with a hardener (Part B) in a precise ratio to trigger the chemical curing reaction.

Question 2

Why is it important to measure epoxy resin and hardener by volume or weight according to the manufacturer's ratio?

Accepted Answer

An incorrect ratio prevents full curing, leaving a sticky, soft, or brittle result

Answer

Epoxy curing is a chemical reaction requiring a specific stoichiometric balance; an off ratio means unreacted resin or hardener remains, preventing a fully cured, hard piece.

Question 3

What is 'polymer clay' made from?

Accepted Answer

Polyvinyl chloride (PVC) particles in a plasticizer base that cures by baking in a home oven

Answer

Polymer clay is a PVC-based modeling material that remains workable at room temperature and permanently hardens when baked at low oven temperatures (typically 275°F/130°C).

Question 4

What causes bubbles in cured epoxy resin, and how are they removed before curing?

Accepted Answer

Air introduced during mixing; removed by gently passing a heat gun or torch flame over the surface

Answer

Stirring resin introduces air bubbles; a brief pass of heat from a torch or heat gun thins the surface tension so bubbles pop and release before the resin gels.

Question 5

What is 'conditioning' polymer clay before use?

Accepted Answer

Warming and kneading the clay until it becomes soft, pliable, and free of cracks

Answer

Conditioning works the plasticizer throughout the clay mass by repeatedly folding and pressing it until the texture is smooth and uniform, preventing cracks during shaping and baking.

Crafting Practice Test

Crafting Practice Test

Crafting Resin and Polymer Clay