Remove the PCB & Layout from the exposure box
Remove the the layout paper (if you want to reuse it, you can dry it)
===Development===
We use a 1% Lye (Sodium Hydroxide = NaOH) solution for development. (Add 10 grams of Lye to a liter of water)
(To know if the development process is finished, take a look to the traces. They should be completed)clearly distinguishable.
===Etching===