First layer settings for adhesion in 3D Printing - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the first layer in 3D printing?

The first layer creates the foundation for the entire print. It must stick well to the print bed to prevent the print from moving or failing.

beginner

Name two common first layer settings that improve adhesion.

Increasing the first layer height and slowing down the first layer print speed help the filament stick better to the bed.

beginner

Why is bed temperature important for first layer adhesion?

A warm bed helps the filament stay soft and stick better to the surface, reducing warping and lifting.

intermediate

What is a 'brim' in 3D printing and how does it help adhesion?

A brim adds extra lines around the base of the print to increase surface area touching the bed, improving adhesion and stability.

intermediate

How does first layer extrusion width affect adhesion?

A wider extrusion width lays down more material, creating a stronger bond with the bed and improving adhesion.

Which setting can help the first layer stick better to the print bed?

A Slowing down the first layer speed

B Increasing print speed for all layers

C Turning off the heated bed

D Reducing first layer height

Slowing down the first layer speed allows the filament to properly bond with the bed surface.

What does increasing the bed temperature do for adhesion?

A Makes the filament cool faster

B Prevents filament from sticking

C Helps filament stick better by keeping it warm

D Has no effect on adhesion

A warm bed keeps the filament soft and sticky, improving adhesion.

What is the purpose of a brim in 3D printing?

A To decorate the print

B To add extra support on top of the print

C To cool the print faster

D To increase the surface area touching the bed for better adhesion

A brim adds extra lines around the base to help the print stick better to the bed.

Which first layer setting increases the amount of filament laid down?

A First layer extrusion width

B Print nozzle diameter

C Layer cooling fan speed

D First layer speed

Increasing extrusion width lays down more filament, improving adhesion.

Why is leveling the print bed important for first layer adhesion?

A It makes the print faster

B It ensures the nozzle is the right distance from the bed for good adhesion

C It changes the filament color

D It reduces filament usage

Proper bed leveling ensures the nozzle is close enough to the bed to stick the filament well.

Explain how adjusting first layer height and speed can improve adhesion in 3D printing.

Think about how the filament touches and sticks to the bed.

Describe the role of bed temperature and additional features like brims in enhancing first layer adhesion.

Consider both heat and physical support.

Practice

1. What is the main purpose of adjusting the first layer settings in 3D printing?

easy

A. To speed up the entire printing process

B. To reduce the noise of the printer

C. To change the color of the filament

D. To ensure the print sticks well to the build plate

Solution

1. Step 1: Understand the role of the first layer

   The first layer is the foundation of the print and must stick well to avoid print failure.

2. Step 2: Identify the main goal of first layer settings

   Adjusting height, speed, and temperature helps the filament stick properly to the build plate.

3. Final Answer:

   To ensure the print sticks well to the build plate -> Option D

4. Quick Check:

   First layer adhesion = sticking well [OK]

Hint: First layer settings fix sticking issues quickly [OK]

Common Mistakes:

• Thinking first layer controls print speed
• Confusing adhesion with filament color
• Assuming it reduces printer noise

2. Which of the following is a correct first layer speed setting to improve adhesion?

easy

A. 10 mm/s

B. 500 mm/s

C. 100 mm/s

D. 0.1 mm/s

Solution

1. Step 1: Recall typical first layer speed values

   First layer speed is usually slower to allow better filament placement and adhesion.

2. Step 2: Compare options to typical values

   10 mm/s is a common slow speed for first layers; 100 mm/s and 500 mm/s are too fast, 0.1 mm/s is too slow and impractical.

3. Final Answer:

   10 mm/s -> Option A

4. Quick Check:

   Slow first layer speed = 10 mm/s [OK]

Hint: First layer speed should be slow, around 10 mm/s [OK]

Common Mistakes:

• Choosing very high speeds that cause poor adhesion
• Picking extremely low speeds that waste time
• Confusing speed units

3. Given these first layer settings: height = 0.3 mm, speed = 15 mm/s, temperature = 210°C, which adhesion type is best for a small, detailed print?

medium

A. Brim

B. Skirt

C. Raft

D. No adhesion

Solution

1. Step 1: Understand adhesion types and their uses

   Skirt surrounds the print but doesn't touch; brim adds extra lines touching the print edge; raft creates a base under the print.

2. Step 2: Match adhesion type to small, detailed prints

   Brim helps small prints stick better by increasing surface area without using a raft, which wastes material.

3. Final Answer:

   Brim -> Option A

4. Quick Check:

   Small detailed print = Brim adhesion [OK]

Hint: Use brim for small detailed prints to improve sticking [OK]

Common Mistakes:

• Choosing raft which wastes material unnecessarily
• Picking skirt which may not improve adhesion enough
• Selecting no adhesion causing print failure

4. A user sets the first layer height too high and notices poor adhesion. What is the likely cause?

medium

A. The nozzle is too close to the bed

B. The filament is not hot enough

C. The first layer is not squished enough onto the bed

D. The print speed is too slow

Solution

1. Step 1: Understand effect of first layer height

   If the first layer height is too high, the filament won't be pressed enough onto the bed, reducing adhesion.

2. Step 2: Identify the cause of poor adhesion

   Not squishing the filament means it doesn't stick well; nozzle too close or filament temperature issues cause different problems.

3. Final Answer:

   The first layer is not squished enough onto the bed -> Option C

4. Quick Check:

   High first layer height = poor squish = poor adhesion [OK]

Hint: Too high first layer = filament not pressed down enough [OK]

Common Mistakes:

• Thinking nozzle is too close when it's actually too far
• Blaming print speed instead of layer height
• Assuming filament temperature is always the cause

5. You want to print a large flat object that warps at the edges. Which first layer adhesion setting combination is best to reduce warping?

hard

A. Use raft adhesion with first layer height 0.2 mm and temperature 60°C

B. Use brim adhesion with first layer height 0.3 mm and temperature 110°C

C. Use skirt adhesion with first layer height 0.4 mm and temperature 50°C

D. Use no adhesion with first layer height 0.1 mm and temperature 70°C

Solution

1. Step 1: Identify adhesion type to reduce warping on large flat prints

   Brim adhesion adds extra lines around the print edges to hold them down and reduce warping better than skirt or no adhesion.

2. Step 2: Choose suitable first layer height and temperature

   A slightly thicker first layer (0.3 mm) helps good bed contact; higher temperature (110°C) improves filament flow and sticking, especially for materials like ABS.

3. Final Answer:

   Use brim adhesion with first layer height 0.3 mm and temperature 110°C -> Option B

4. Quick Check:

   Large flat print warping = brim + proper height + high temp [OK]

Hint: Brim and higher temp help large flat prints stick and avoid warping [OK]

Common Mistakes:

• Choosing raft which wastes material and time
• Using skirt which doesn't prevent edge warping
• Ignoring temperature effects on adhesion