To build own PCBs you need two big acquisitions. An exposure machine and an etching machine.
Attention! Be careful with chemicals, read instructions!
For exposure, I use a Isel device. The exposure time is approximately 5 minutes. With ready coated plates from Bungard I made the best experiences.
[Translate to Englisch:] Für den Lötstopplack habe ich einen eigenen Artikel schrieben.