Proma 101150 0200 FR4 Epoxy Resin Board Positive Cu 35 µm 2 Sided 1.5x150x200mm

I like this product. As the image develops it turn a dark maroon colour so it is easy to tell when it is time to remove it from the developer solution. It is less sensitive than Rapid's original PCB board (now obsolete), so there is less chance of it deteriorating from light exposure during storage. I found after a few traial runs using a conventional UV Flourescent tube light box; an exposure of 1.5 to 2 minutes worked well. The developer I used was granulated sodium Hydroxide with a dilution of 1.5 teaspoons added to 600ml of luke warm water. If you are making double sided boards lay a thin layer of sponge in the bottom of the developer tray to avoid scratching the underlying image.