Fillets and Rounds

Fillets & Rounds

Fillets and Rounds are related to each other. Both are curves added to the edges of a part. Fillets add material to the intersection edge of two faces to create a smooth transition from one face to another. This serves to strengthen the joint. Rounds remove material from the exterior edges of two intersecting faces. A Round removes sharp edges, keeps the corners from chipping and prevents a part from sticking to a mold. This tutorial will explore both of these features.

Fillets and Rounds Part 1

Use the Rectangle and Extrude Tool to draw a 4" x 3" x 2" rectangular prism.

Use Project Geometry to trace the face of the shape you created (this will appear yellow).

*Project Geometry is used to quickly trace the shape of an extrusion or 2D-sketch

Use the Offset tool to create a copy of the projected geometry that is .5" smaller.

Extrude the rectangle, with a Cut, a Taper Angle of –10, and a depth of .75, as shown.

On the inside edges of the pocket, use the Fillet tool to add .25" fillets on all inside edges.

Click OK.

Create a new set of fillets around the outside edges of your part as shown. Change the type of fillet to Inverted using the dropdown menu in the dialog box and create .35" fillets around the outside edges.

Use the fillet tool to create rounds around the outside edges that is .2"

Save as "Fillets and Rounds Part 1"

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