Shell feature for hollow parts in Solidworks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply a shell feature with a thickness of 2mm.

Solidworks

ShellFeature = model.FeatureManager.[1](2.0)

Drag options to blanks, or click blank then click option'

AAddShellFeature

BInsertThinFeature

CInsertShell

DInsertShellFeature

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'InsertThinFeature' which is for thin features but not shell.

Using 'InsertShell' which is incomplete or invalid method.

Using 'AddShellFeature' which is not a valid API method.

The correct method to create a shell feature in SolidWorks API is InsertShellFeature. It applies a hollowing operation with the specified thickness.

2fill in blank

medium

Complete the code to specify the faces to remove in the shell feature.

Solidworks

facesToRemove = [face1, face2]
ShellFeature.[1](facesToRemove)

Drag options to blanks, or click blank then click option'

ASetFacesToRemove

BRemoveFaces

CAddFacesToRemove

DSetFacesToKeep

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'SetFacesToKeep' which is the opposite operation.

Using 'AddFacesToRemove' which is not a valid method.

Using 'RemoveFaces' which is not a recognized API call.

The method SetFacesToRemove is used to specify which faces to remove when creating a shell feature, making the part hollow.

3fill in blank

hard

Fix the error in the shell thickness assignment.

Solidworks

ShellFeature.Thickness = [1]

Drag options to blanks, or click blank then click option'

A2

B'2mm'

C2.0

D"2"

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings like '2mm' or "2" which cause type errors.

Using integer 2 which might be accepted but less precise.

The thickness property expects a floating-point number representing the thickness in model units. Using 2.0 is correct. Strings or integers without decimal may cause errors.

4fill in blank

hard

Fill the three blanks to create a shell feature and specify the thickness and faces to remove.

Solidworks

shell = model.FeatureManager.[1]([2])
shell.[3](facesToRemove)

Drag options to blanks, or click blank then click option'

AInsertShellFeature

B2.5

CSetFacesToRemove

DAddShellFeature

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'AddShellFeature' which is invalid.

Using thickness as a string.

Using wrong method to set faces.

First, create the shell feature with InsertShellFeature and thickness 2.5. Then specify faces to remove with SetFacesToRemove.

5fill in blank

hard

Fill all four blanks to create a shell feature, set thickness, and remove specific faces.

Solidworks

shellFeature = model.FeatureManager.[1]([2])
shellFeature.[3](facesToRemove)
shellFeature.Thickness = [4]

Drag options to blanks, or click blank then click option'

AInsertShellFeature

B3.0

CSetFacesToRemove

D2.0

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings for thickness values.

Using invalid method names.

Not setting thickness property after creation.

Create the shell feature with InsertShellFeature and initial thickness 3.0, specify faces to remove with SetFacesToRemove, then set the thickness property to 2.0 for final thickness.

Practice

1.

What is the main purpose of the Shell feature in SolidWorks?

easy

A. To hollow out a solid part by removing internal material

B. To add extra thickness to a solid part

C. To combine two solid parts into one

D. To create a new solid part from a sketch

Solution

1. Step 1: Understand the Shell feature function

   The Shell feature removes internal material from a solid part, leaving a hollow shell with specified wall thickness.

2. Step 2: Compare options with the Shell feature purpose

   Only To hollow out a solid part by removing internal material correctly describes hollowing out a solid part by removing inside material.

3. Final Answer:

   To hollow out a solid part by removing internal material -> Option A

4. Quick Check:

   Shell feature = hollow part creation [OK]

Hint: Shell feature hollows parts by removing inside material [OK]

Common Mistakes:

• Confusing Shell with adding thickness
• Thinking Shell combines parts
• Assuming Shell creates new solids from sketches

2.

Which of the following is the correct way to specify wall thickness when using the Shell feature?

easy

A. Enter the thickness value in the Shell property manager before selecting faces to remove

B. Draw a sketch of the thickness and extrude it

C. Use the Fillet tool to set thickness

D. Apply a material color to indicate thickness

Solution

1. Step 1: Identify how wall thickness is set in Shell feature

   Wall thickness is entered as a numeric value in the Shell property manager before removing faces.

2. Step 2: Eliminate incorrect options

   Options B, C, and D do not relate to setting wall thickness in Shell feature.

3. Final Answer:

   Enter the thickness value in the Shell property manager before selecting faces to remove -> Option A

4. Quick Check:

   Wall thickness input = Enter the thickness value in the Shell property manager before selecting faces to remove [OK]

Hint: Set thickness in Shell property manager before removing faces [OK]

Common Mistakes:

• Trying to set thickness via sketches
• Using unrelated tools like Fillet
• Confusing color with thickness

3.

Given a solid cube of 100mm edge length, you apply a Shell feature with 5mm wall thickness and remove the top face. What is the height of the hollow part after shelling?

medium

A. 90 mm

B. 100 mm

C. 95 mm

D. 85 mm

Solution

1. Step 1: Understand shelling effect on height

   Shell removes 5mm thickness from all internal faces except the removed top face, so height reduces by wall thickness at bottom only.

2. Step 2: Calculate hollow height

   Original height 100mm minus 5mm wall thickness at bottom = 95mm hollow height.

3. Final Answer:

   95 mm -> Option C

4. Quick Check:

   Height after shell = 100 - 5 = 95 mm [OK]

Hint: Subtract wall thickness only where faces remain [OK]

Common Mistakes:

• Subtracting thickness twice
• Ignoring removed face effect
• Assuming hollow height equals original height

4.

You applied a Shell feature with 3mm thickness but the shell did not create a hollow part. What is the most likely reason?

medium

A. The part is already hollow

B. You forgot to select faces to remove

C. The material color is not set

D. The wall thickness is larger than half the smallest part dimension

Solution

1. Step 1: Identify shell failure cause

   If wall thickness is too large (more than half the smallest dimension), shelling cannot hollow the part.

2. Step 2: Check other options

   Not selecting faces or material color does not prevent shelling; part being hollow is unrelated to failure.

3. Final Answer:

   The wall thickness is larger than half the smallest part dimension -> Option D

4. Quick Check:

   Thickness > half dimension causes shell failure [OK]

Hint: Wall thickness must be less than half smallest dimension [OK]

Common Mistakes:

• Ignoring size limits for thickness
• Assuming color affects shell
• Thinking shell needs face removal always

5.

You have a solid cylinder 50mm diameter and 100mm height. You want to create a hollow cylinder with 4mm wall thickness and an open top using the Shell feature. Which steps should you follow?

hard

A. Apply Shell with 4mm thickness without removing any face

B. Apply Shell with 4mm thickness, then select the top face to remove

C. Create a new sketch of a hollow cylinder and extrude it

D. Use Fillet tool to hollow the cylinder

Solution

1. Step 1: Set wall thickness in Shell feature

   Enter 4mm as wall thickness in the Shell property manager.

2. Step 2: Remove the top face to create an opening

   Select the top face of the cylinder to remove it, making the cylinder hollow with an open top.

3. Final Answer:

   Apply Shell with 4mm thickness, then select the top face to remove -> Option B

4. Quick Check:

   Shell + remove top face = hollow open cylinder [OK]

Hint: Remove faces to create openings after setting thickness [OK]

Common Mistakes:

• Not removing the top face for opening
• Using sketches instead of Shell
• Trying to hollow with Fillet tool