Fixing a Bike Inner Tube and a Rain Shoe

1. Fixing a Bike Inner Tube.

A bike inner tube was leaking on air, there is no way to inflate the tire.

Take the inner tube out:

Inflate the inner tube, soak it in water, find a leaking spot: 

Use these tools:

The Classic Patch Kit, from Amazon, $4.98:

File the broken part with a file (the red square, the cap of the kit), and cut a patch (the green circle):

Work outdoors, not indoors.

Clean the filed area with alcohol, spread a layer of rubber cement (from the Classic Patch Kit) on the tube (I always wear a gas mask (the smell might be harmful, with this mask I could not smell it at all)):

Peel off the protective plastic film from the cut patch:

Put the patch onto the tube area with cement and press it with hands:

Wait for several minutes, inflate the tube:

 Make sure there is no leak any more in water:

Deflate the tube:

Reinsert the inner tube on the wheel:

Inflate the tube, now the bike is standing with the fixed inner tube:

2. Fixing a rain shoe.

 The cut was done by my sickle when I was cutting wild grass. Ironically, the brand new shoes were $5 several years ago, now the Classic Patch Kit is $5 too: