To Create a Bend with a Surface Reference
1. Click Sheetmetal > Bend. The Bend tab opens.
2. Select a surface on which to place the bend. Placement handles appear on the surface reference.
3. Perform one of the following operations:
In the Model Tree or in the graphics window, select a sketch (a single linear section) as a reference for the bend line geometry.
Click Bend Line. The Bend Line tab opens. Click Sketch and sketch a bend line.
Set the bend line end references as follows:
1. Select an edge or a vertex reference for the first end of the bend line.
If an edge is selected, select an offset reference and type a value for the offset distance.
2. Repeat step a to place the second end of the bend line.
4. Click to create an angled bend or click to create a rolled bend.
5. Click a Bend Area Position button to locate the bend area in relation to the bend line.
Starts at bend line—The bend area starts at the bend line.
Ends at bend line—The bend area ends at the bend line.
Centered on bend line—The bend line is in the middle of the bend area.
6. Set the value of the bend radius.
7. Set the dimension location:
—Dimensions the bend from the outside surface.
—Dimensions the bend from the inside surface.
—Dimensions the bend according to the location set by the SMT_DFLT_RADIUS_SIDE parameter.
8. Set the value of the bend angle.
9. Set the method to measure the bend angle:
—Dimensions the bend angle by measuring the resulting internal angle.
—Dimensions the bend angle by measuring the deflection from straight.
10. To change the default relief, perform the following tasks:
a. Click Relief. The Relief tab opens.
b. Select a different type of relief from the list, or click Define each side separately and select a side and a relief type.
For Stretch, Rectangular, and Obround relief, set the depth and thickness.
11. To set feature-specific bend allowance and calculate the developed length using a different method from that of the part, perform the following operations:
a. Click Bend Allowance. The Bend Allowance tab opens.
b. Click Use feature settings.
c. Perform one of the following operations:
Click By K factor or By Y factor and type a new factor value or select one from the list.
To use a bend table to calculate developed length for arcs, click By bend table. Use the default table, select a new one from the list, or click Browse to browse to a different table.
* 
Only bend tables copied to the part are available.
12. Click .