Arduino FM radio receiver shield

Step 4 Spraypaint

Next thing to do is to prepare the copper pcb. This can be found in many sizes and the one I have hear is 160x100x1,6 mm and is pretty standard her in Sweden. 

1/ Clean the copper from any residues, fingerprints, jelly or whatever has landed on them.
2/ Spraypaint the copper with two layers of paint as evenly as possible
3/ Let it dry