I Used this to re stick the soles of my shoes that had come lose. Cleaned both surface thoroughly,removing old glue, then using sandpaper to key the surface. Applied glue to both surface then waited for the glue to dry .
Having used contact glues professionally, it is important to make sure the glue is dry before you apply the two surfaces together.
Pressed soles to shoes and clamped edge of soles with spring cramps and left for 24 hours. Worn several times since repair as good as new and no problems so far.