How to sharpen blades with a file?

Why use a file to sharpen a knife?

Knife file sharpening guide:

Step 1 - Secure the Knife in a Vise

Step 2 - Use a small angle

Step 3 - Reverse Blade File

Step 4 - Remove the foil

Step 5 - Repeat as desired

How to sharpen an ax with a file?

Step 1 - Secure the Ax in a Vise

Step 2 - Semi-circular filing

Step 3 - Repeat as desired