3D solid editing (FILLET, CHAMFER edges) in AutoCAD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply a fillet with radius 5 to the selected edge.

AutoCAD

command('FILLETEDGE'); selectEdge([1]); setRadius(5); execute();

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

Aedge1

Bface1

Cvertex1

Dsolid1

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting a face instead of an edge.

Using a vertex selection which is not valid here.

The fillet command requires selecting an edge, so edge1 is correct.

2fill in blank

medium

Complete the code to chamfer edges with distances 3 and 4.

AutoCAD

command('CHAMFEREDGE'); selectEdges([1]); setDistances(3, 4); execute();

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

Aface1

BedgesList

Csolid1

Dvertex1

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting a single face or vertex instead of edges.

Using an invalid object type for chamfer.

Chamfering requires selecting edges, so edgesList is the correct choice.

3fill in blank

hard

Fix the error in the code to correctly fillet the edge with radius 2.

AutoCAD

command('FILLETEDGE'); selectEdge([1]); setRadius(2); execute();

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

Avertex2

Bface2

Cedge1

Dedge2

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number for radius.

Selecting a face or vertex instead of an edge.

The radius must be a number, and the edge selected should be valid. edge1 is the correct edge and radius should be numeric.

4fill in blank

hard

Fill both blanks to chamfer edges with equal distances of 5.

AutoCAD

command('CHAMFEREDGE'); selectEdges([1]); setDistances([2], [2]); execute();

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

AedgesGroup

B5

C3

DfaceGroup

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting faces instead of edges.

Using different distances for equal chamfer.

Select the group of edges with edgesGroup and set both distances to 5 for equal chamfer.

5fill in blank

hard

Fill all three blanks to fillet multiple edges with radius 1.5 and confirm the operation.

AutoCAD

command([1]); selectEdges([2]); setRadius([3]); execute(); confirm();

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

A'FILLETEDGE'

BedgesToFillet

C1.5

D'CHAMFEREDGE'

Attempts:

3 left

💡 Hint

Common Mistakes

Using chamfer command instead of fillet.

Setting radius as a string instead of a number.

Use the fillet command 'FILLETEDGE', select the edges edgesToFillet, and set radius to 1.5.

Practice

1. What does the FILLET command do in 3D solid editing?

easy

A. Cuts the edges at a straight angle to create a bevel

B. Rounds the edges with a smooth curve using a radius

C. Deletes the selected edges from the solid

D. Extends the edges to meet at a corner

Solution

1. Step 1: Understand the purpose of FILLET

   The FILLET command is used to create rounded edges by applying a radius to corners.

2. Step 2: Compare with other options

   Chamfer cuts edges at an angle, deletion removes edges, and extension lengthens edges, so these are incorrect.

3. Final Answer:

   Rounds the edges with a smooth curve using a radius -> Option B

4. Quick Check:

   FILLET = Rounded edges [OK]

Hint: FILLET = round edges with radius [OK]

Common Mistakes:

• Confusing FILLET with CHAMFER
• Thinking FILLET deletes edges
• Assuming FILLET extends edges

2. Which of the following is the correct syntax to apply a chamfer with distances 5 and 3 in AutoCAD 3D solid editing?

easy

A. CHAMFER D 5 3

B. CHAMFER DISTANCE 5 3

C. CHAMFER 5 3

D. CHAMFER 3 5

Solution

1. Step 1: Recall correct CHAMFER command syntax

   The correct syntax uses the letter D for distance followed by two distances, like CHAMFER D 5 3.

2. Step 2: Eliminate incorrect options

   Options B and C miss the 'D' keyword, and CHAMFER 3 5 reverses the distances.

3. Final Answer:

   CHAMFER D 5 3 -> Option A

4. Quick Check:

   CHAMFER D + distances = correct syntax [OK]

Hint: Use 'D' before distances in CHAMFER command [OK]

Common Mistakes:

• Omitting 'D' before distances
• Swapping distance values
• Using wrong keywords like DISTANCE

3. Given a 3D solid cube, what will be the result of applying FILLET EDGE 2 on all edges?

medium

A. All edges are cut at 2 units creating a bevel

B. The command causes an error due to missing parameters

C. Edges remain unchanged because FILLET EDGE requires two distances

D. All edges become rounded with radius 2

Solution

1. Step 1: Understand FILLET EDGE command

   FILLET EDGE with a single radius value rounds all selected edges with that radius.

2. Step 2: Check if parameters are sufficient

   FILLET EDGE 2 is valid and rounds edges; chamfer requires two distances, so no error occurs.

3. Final Answer:

   All edges become rounded with radius 2 -> Option D

4. Quick Check:

   FILLET EDGE + radius = rounded edges [OK]

Hint: FILLET EDGE with one number rounds edges [OK]

Common Mistakes:

• Confusing FILLET with CHAMFER parameters
• Assuming error due to missing second distance
• Thinking edges stay sharp

4. You tried to apply CHAMFER D 4 on a 3D solid edge but got an error. What is the likely cause?

medium

A. CHAMFER cannot be applied to 3D solids

B. The 'D' keyword is not valid in CHAMFER command

C. Only one distance was provided instead of two

D. Distance values must be equal for chamfer

Solution

1. Step 1: Check CHAMFER syntax requirements

   CHAMFER with distances requires two distance values after 'D', e.g., CHAMFER D 4 4.

2. Step 2: Identify error cause

   Providing only one distance causes syntax error because two distances define the chamfer lengths.

3. Final Answer:

   Only one distance was provided instead of two -> Option C

4. Quick Check:

   CHAMFER D needs two distances [OK]

Hint: CHAMFER D needs two distances, not one [OK]

Common Mistakes:

• Using only one distance value
• Thinking 'D' is invalid keyword
• Assuming chamfer can't apply to solids

5. You want to create a 3D solid box with all edges beveled at 1 unit horizontally and 2 units vertically. Which sequence of commands correctly achieves this?

hard

A. Create box -> Select edges -> CHAMFER D 1 2 -> Apply

B. Create box -> Select edges -> FILLET R 1 2 -> Apply

C. Create box -> Select edges -> CHAMFER 2 1 -> Apply

D. Create box -> Select edges -> FILLET EDGE 1 2 -> Apply

Solution

1. Step 1: Identify beveling command and parameters

   Beveling edges means chamfering, which requires two distances for horizontal and vertical cuts.

2. Step 2: Choose correct command syntax

   CHAMFER D 1 2 correctly applies chamfer with distances 1 and 2; FILLET rounds edges and does not take two distances.

3. Final Answer:

   Create box -> Select edges -> CHAMFER D 1 2 -> Apply -> Option A

4. Quick Check:

   Chamfer D + two distances = beveled edges [OK]

Hint: Use CHAMFER D with two distances for bevels [OK]

Common Mistakes:

• Using FILLET instead of CHAMFER for bevels
• Swapping distance order
• Omitting 'D' keyword in CHAMFER