PCB Making Process Types

There are 3 types I use to make PCB:

1) Toner Transfer Methods
    This is a very basic PCB making process, where the layout is printed on "Transfer Paper" which is then transfered to the PCB. This methods works fine if the layout is not very dense.

2) Dryfilm Photoresist
    I use negative type films. Some of the populars ones are produced by DuPont ad MG Chemicals.

3) CNC Routing
    This is essentially to route the track by isolating the tracks using a CNC machine.