If consecutive edges are connected with an angle < 15 degrees, you only need to select a single edge to apply the function Create new chamfer/rounding. [New Chamfer/Fillet...].. function to all subsequent edges as well.

Example:

One edge selected

Automated application of tangent continuous on all adjoining, fitting edges

	Note
	Tangent continuous may cause unwanted blends. In this case the blend has to be created earlier or by sketch.

For angles larger than 15 degree the tangent continuous does not take effect.

In following example the first edge after the selected one is blended , the second one not (see figure under b), because the transition angle is larger than 15 degree.

Real, PARTsolutions never depicts curves. Curves are always resolved in lines connected by a certain angle. If the resolution is too low, it may happen that the transition angle is larger than 15 degrees.

If a line follows a curve and tangent continuous fails, the problem is always too low resolution.

Example of curve following line

However, if a section is followed by another section at an obtuse angle and the tangential continuation does not work, the reason is the angle of more than 15° (see above).

Example of line following line

In following example edge selection is used. For a few edges tangent continuous works, but at two other edges tangent continuous stops due to too low resolution.

Actually the Blend feature should function due to tangent continuous.

The figure shows that tangent continuous fails because of to low resolution

Alternative approach

	Note
	Especially for a continuous contour, do not use edge selection, but face selection, since this is considerably less effort compared to a selection of the individual edges!

Example:

The two following figures show the use of face selection.

Selection of the face

The Blend feature is applied to all edges adjoining the face.

Note

Tangential continuation is also used in CAD systems, so it can also happen that more blends are visible in CAD than in PARTdesigner. To be absolutely sure that tangential continuation works, it is advisable to select more edges than absolutely necessary. More edges are not a problem, but too few may be. In some cases, inserting a blend can set the tangent continuous back.[82] In this case, you have to select the edge manually. As already mentioned: It is recommended to select more edges than absolutely necessary.