The key element here is that copper and solder mask placements have extremely ... [Brian Benchoff] published a fabulous How to do PCB art in Eagle article. Of course, he’s gone deeper than ...

But what about making a PCB that gets hot on purpose ... there was a miscommunication with the board manufacturer, and the solder mask used begins to degrade after a few hours at the operating ...

Because nitrogen is not an oxidizing gas, adding it to the SMT convection reflow oven reduces oxidation on the welding ...