Extruded boss/base in Solidworks - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the purpose of Extruded Boss/Base

What is the main purpose of using the Extruded Boss/Base feature in SolidWorks?

A To add material by extending a 2D sketch into 3D space

B To remove material by cutting through a 3D model

C To apply a surface finish to a 3D model

D To create a 2D sketch on a plane

💡 Hint

Think about how you turn a flat drawing into a solid shape.

The Extruded Boss/Base feature adds material by extending a 2D sketch into the third dimension, creating a solid shape.

🎯 Scenario

intermediate

Choosing the correct extrusion direction

You have drawn a circle on the front plane and want to create a cylinder 50mm long. Which option correctly sets the extrusion direction and length?

A Extrude 50mm along the sketch plane

B Extrude 50mm in the direction normal to the sketch plane

C Extrude 50mm in any direction without specifying length

D Extrude 50mm but only in the reverse direction of the sketch normal

💡 Hint

Extrusion usually goes perpendicular to the sketch plane.

Extruding normal to the sketch plane by 50mm creates a cylinder of that length.

🔧 Formula Fix

advanced

Why does the extrusion fail?

You try to create an Extruded Boss/Base from a closed rectangle sketch, but SolidWorks shows an error and does not create the extrusion. What is the most likely cause?

A The sketch is on a plane that does not exist

B The extrusion length is set to zero

C The sketch is not fully closed, there is a small gap between lines

D The material type is not selected

💡 Hint

Check if the sketch forms a complete loop without breaks.

Extrusion requires a fully closed sketch. Even a tiny gap prevents creating a solid.

❓ visualization

advanced

Visualizing extrusion result

You extrude a triangle sketch 30mm using Extruded Boss/Base. Which shape will you see in the 3D view?

A A triangular prism 30mm long

B A pyramid with triangular base

C A flat triangle with thickness 0

D A cylinder with triangular cross-section

💡 Hint

Extrusion extends the sketch shape straight out, keeping the same cross-section.

Extruding a triangle creates a triangular prism, extending the shape linearly.

❓ data_modeling

expert

Combining multiple extrusions in a part

You want to create a part with two extruded bosses: first a 40mm cube, then a 20mm cylinder on top. How should you organize the features in SolidWorks?

A Create the cube and cylinder sketches on different planes and extrude both simultaneously

B Create the cylinder first, then create the cube sketch on the cylinder's side and extrude it

C Create both sketches on the same plane and extrude them together as one feature

D Create the cube with Extruded Boss/Base, then create the cylinder sketch on the cube's top face and extrude it

💡 Hint

Think about building the base first, then adding features on top.

Creating the cube first and then sketching the cylinder on its top face ensures proper feature stacking and positioning.