Title: Why can a LOFT create a twisted 3D shape even when the profiles look correct?

[indiancad]

I have seen cases where a LOFT between two profiles produces a twisted or unexpected surface, even though the cross-sections appear correct.

One thing worth checking is the position and orientation of the profiles. Their starting points, alignment, and placement can affect how the loft connects corresponding sections.

When the result looks wrong, I check the profiles individually, adjust their alignment, and try different loft settings before rebuilding the geometry.

This is especially important when creating transition pieces, ducts, or curved components.

When a LOFT twists unexpectedly, what do you check first: profile alignment, placement, or the loft settings?