You can use the Chamfer/Fillet tool to make your 3D models more realistic through chamfers and fillets. Chamfers are sloping transitions between two faces. Fillets are rounded edges; they create arc-shaped, smooth transitions between two faces. Typically, these softened edges and corners are used to make objects more safe and attractive.

Create chamfers

Using the Chamfer/Fillet tool, you can create two different types of chamfers: basic and 2-distance. The basic chamfer is a 45-degree, sloped transition between adjacent surfaces or faces. On the other hand, the 2-distance chamfer is a sloped transition that is not necessarily 45 degrees; you can customize the blend by specifying where the newly created edges should end.

1. Go to Tools > Chamfer/Fillet. 
   
   
2. Select the type of chamfer.
   “Auto” creates basic chamfers and “2 Distances” creates 2-distance chamfers.
   
3. Select the edges you want to chamfer. If you select a face or body, all connected edges will be automatically selected. 
   
   
4. If you’re in “Auto” mode, pull the selected edges to blend them. The chamfer length is a negative value.
   If you’re in “2 Distances'' mode, pull the selected edges once; you’ll see two equal distances measured from the edges you selected. Then, drag each set of arrows to adjust each distance. 
   
   
5. Select the dimension label to define exact values of the chamfer. If you’re using a mouse or trackpad with the iPad, you can type in the exact value and press the Return key to finalize the dimension. 
   
   
6. Select Done to finish.
   Auto: 
   
   2 Distances: 
   
   
   If the edge you adjusted on a 3D body has other continuous edges, all those edges will also be blended. 

Create basic fillets

1. Select the edges you want to fillet.
   Make sure the blend type is set to “Auto.” 
   
   If you select a face or body, all connected edges will be automatically selected. 
2. Pull the selected edges to blend them. The fillet size is a positive value.
   
3. Select the dimension label to define exact values of the fillet. If you’re using a mouse or trackpad with the iPad, you can type in the exact value and press the Return key to finalize the dimension.
   
   If the edge you adjusted on a 3D body has other continuous edges, all those edges will also be blended.
   

Adjust chamfers and fillets

You can always fine-tune the fillet or chamfer by selecting the filleted or chamfered edge and changing the dimensions. Once you fillet an edge, you cannot change it into a chamfer without completely deleting the fillet, and vice versa. To delete it, just select the filleted or chamfered face and select Delete or press the Delete key. 

💡Shortcut💡: If you select the edges first, the menu is customized automatically. From this adaptive menu, go to Chamfer/Fillet. 

When you're done blending the edges, tap anywhere in the design space to confirm the change.