The face repatching operator allows getting rid of sliver or unwanted faces by merging a group of neighbor faces together. This operator reapproximates the area of interest with a new B-spline surface that is optionally faired at the end to minimize its bending energy. One important limitation of the repatching algorithm is that it can proceed with outer contours only, i.e., it would not work on faces with holes.
Here is an example of a sheet metal part with a corner we would like to repatch:
After repatching, the sliver face goes away while the curved shape of the corner is preserved:
To use this function, select the neighbor faces you'd like to merge and execute repatch command from the scripting window.