Some projects benefit greatly from the parts a builder is able to find. Take this UV exposure bed for photo-resist copper clad boards (translated). It looks like a commercial product, but was actually ...

[Stynus] was frustrated with the fact that he would have to flip his PCBs over mid way through the exposure process, so he decided the best course of action would be to build his own double-sided PCB ...

The device was designed specifically for use in creating a proper layout of PCBs with the use LED to make a UV exposure piece of equipment. Although the price of the circuit may seem to be high, it is ...