ABS material properties and uses in 3D Printing - Practice Problems & Coding Challenges

Challenge - 5 Problems

📋 Factual

intermediate

What is a key physical property of ABS plastic?

ABS plastic is widely used in 3D printing. Which of the following best describes a key physical property of ABS?

A It has good impact resistance and toughness.

B It is highly flexible and stretches easily without breaking.

C It dissolves quickly in water.

D It melts at a very low temperature, below 50°C.

💡 Hint

Think about what makes ABS good for durable parts.

ABS is known for its toughness and ability to absorb impacts without cracking, making it suitable for sturdy 3D printed objects.

🧠 Conceptual

intermediate

Why is ABS preferred for automotive parts?

ABS plastic is often used in car parts. What property of ABS makes it suitable for this use?

A It is transparent and allows light to pass through.

B It easily dissolves in common solvents.

C It is very soft and compressible.

D It resists heat and can handle temperature changes well.

💡 Hint

Consider the environment inside and outside a car.

ABS can withstand heat and temperature changes, which is important for parts exposed to sunlight and engine heat.

🚀 Application

advanced

Choosing ABS for a 3D printed phone case

You want to 3D print a phone case that is strong and can handle drops. Why would ABS be a good choice?

A ABS is brittle and will crack easily, so it is not suitable.

B ABS melts at low temperature, so it will deform easily in heat.

C ABS is flexible and can absorb shocks without breaking.

D ABS is very heavy, making the phone case uncomfortable.

💡 Hint

Think about how the phone case protects the phone.

ABS's toughness and shock absorption make it ideal for protective cases that need to survive drops.

🔍 Analysis

advanced

Comparing ABS and PLA for outdoor use

Which statement correctly compares ABS and PLA plastics for outdoor 3D printed parts?

A PLA is better for outdoor use because it resists UV light and heat better than ABS.

B ABS is better for outdoor use because it withstands heat and sunlight better than PLA.

C Neither ABS nor PLA can be used outdoors because both dissolve in water.

D Both ABS and PLA have the same resistance to weather conditions.

💡 Hint

Consider which plastic handles heat and sunlight exposure better.

ABS resists heat and UV light better than PLA, making it more suitable for outdoor parts.

❓ Reasoning

expert

Why does ABS require a heated bed in 3D printing?

ABS plastic often needs a heated print bed during 3D printing. What is the main reason for this requirement?

A To keep the plastic warm so it sticks better and reduces warping.

B To cool the plastic quickly and prevent warping.

C To make the plastic dry faster during printing.

D To change the color of the plastic during printing.

💡 Hint

Think about how temperature affects plastic sticking and shape.

A heated bed keeps ABS warm to prevent it from cooling too fast and warping, improving print quality.