Quote Originally Posted by Michael W View Post
The only one I know where you can make direct enlarged prints from a small negative is liquid emulsion.
The liquid emulsion can be on almost any surface - I have done a few small orotones (prints on glass and gold on the back), you can cheat and use a bronze powder, but if you use real gold, small is best.

5x4 contact prints are useful for getting to grips with a particular process without spending large amounts of money on materials. They also make wonderful gifts.