I’m trying to figure out how to model a strap over a last (shoe) model. I did a rough model and sketch here to show what I’m after… Basically, I would like the strap to go around the shoe but also wrap under the triangle shaped component so that it looks realistic. Any help would be appreciated ! last model 1.3dm (8.9 MB)

You could draw a curves for the outline of the strap. Then use those curves to split or TRIM a copy of the shoe surface. Then use OFFSETSRF to get the thickness.