Let us say you want to test exposures from 0 seconds to 2m30s in steps of 30s. Setup the artwork and prepare the PCB. Use a piece of card to cover 4 of the patterns, expose 30 seconds. Without moving ...

Having never etched any PCBs ... he decided to try his hand at etching a very detailed map of the Paris Metro as a test pattern ... 17 thoughts on “ Test Your Etching Chops With PCB Map ...

Hello friends in this video I have built a PCB etching machine. this machine used or chemical treatment of Copper clad PCB first black spray paint on blank copper clad PCB, then I trace the PCB track ...

You can see the test patterns in the circuit and one test pattern outside of the circuit board. All test patterns came out. The test pattern has an 8 mil trace, ... .. have you tried floating the pcb ...

Here’s a step-by-step guide for printing etch resist directly to copper clad boards. Two methods of making printed circuit boards at home have long dominated as the favorites; using photo-res… ...