- 1). Trace the outline of your right sneaker sole onto a piece of ¼-inch synthetic rubber. Take your time to ensure an exact match.
- 2). Put on a pair of work gloves. Cut out the shape of the sole with a straight-edge knife.
- 3). Loosen the shoe's insole with a knife. Carefully remove the insole. Cut off the outer sole with the knife.
- 4). Run the edge of a flat metal scraper over the bottom rim of the sole-less sneaker to smooth the surface and remove any residual glue and rubber.
- 5). Brush a thick layer of shoe repair cement onto the outer edge of the fresh sole. Fit the sole onto the rim and squeeze it into place. Squeeze tightly for 60 seconds. Wipe away any residual cement with a clean rag.
- 6). Place the shoe in a vice and tighten it to keep maximum pressure on the sole for 24 hours.
- 7). Repeat Steps one through six for the left sneaker.
- 8). Layer the underside of each insole with shoe repair cement. Insert each insole into its respective sneaker and press in place for 60 seconds.
Source...