Create Your Own Guitar Effects Pedal

Step 4 Drilling the holes:

If the board is all clean, and you've got rid of the etchant you're ready to drill the holes in the board. This can be pretty much a pain in the ass, especially if you haven't got acces to a column drill, the drill heads are so thin you can break it really easy, so you really have to make sure to drill straight down, and don't try to correct the direction while drilling.

Most people use 0.8 mm drills, but I advise using a 1.0 mm drill. The 0.8 mm might be a bit small for some components.