Punch Maintenance

Ever wondered how to keep your punches in perfect working order? I have punched through foil for a number of years, but the other day a friend over east told me there are actually 3 steps:

1. Punch through some waxed paper - this lubricates your punch.

2. Punch through some aluminum foil - this sharpens your punch

3 and if needed you can put  a few drops of lubricant to oil the punch mechanism for a smooth action.

What is your favourite punch brand?