How to Etch a PCB Tutorial
OCModShop teaches you a mod of etching a PCB.
“After about 1 or 2 minutes youll notice that you can see some board through the copper. Frequently check until all of it is gone, when your artwork is clean and clearly visible get it out of the bowl and rinse it with water. Remember we dont want to leave it in the solution for too long or it will begin dissolving the protected copper. Congratulations, you just made your own Printed Circuit Board.”
Recovered from an Internet Archive snapshot of the InsaneTek front page.