What characteristic should be avoided when using curves to design profiles in a sketch?

When designing profiles in a sketch using curves, it is essential to maintain certain characteristics for the sketch to function effectively in a 3D modeling environment. Avoiding non-tangent curves is crucial because non-tangent connections can result in abrupt changes in direction, leading to poor flow and potentially problematic transitions in 3D models. Maintaining smoothness in the design is vital, especially for aerodynamic or fluid-structure interactions.

Overlapping curves can complicate the sketch because they create ambiguity in the interpretation of the curves, which can lead to errors when defining the geometry and can make it difficult to manage or modify the design later. Clear and distinct curves are necessary for precision and clarity in modeling.

Disconnected curves might indicate incomplete sketches, which can hinder the ability to create solids or surfaces from the sketch because the software often requires a closed boundary to define a profile fully. This can create issues in generating the final 3D geometry, leading to failures in the modeling process.

Each of these characteristics—non-tangent, overlapping, and disconnected curves—can lead to complications when developing a robust and functional sketch. Therefore, it is optimal to avoid all of these features to ensure that curves in a design profile contribute effectively to the overall modeling process.