I've never had any problems with my shortened zips, they laste as long as one bought to size.
|Set the sewing machine to zig-zag|
|Tighten the tension and zig-zag over the zipper teeth in |
the same spot
|This is how the end of the zipper should look|
|Just to be sure I re-did my stitching switching|
to my trusty Bernina. Next you cut the zip about
an 1" away from the stitching using