This instruction has been written for a supervised session performed in a chemical lab. Be careful when applying to a different environment.
This instruction is about producing printed circuit boards (PCBs) from already prepared designs. There are two major techniques for PCB manufacturing. For prototyping purposes it is popular to use a special milling machine for PCBs. The faculty uses a LPKF ProtoMat S62 in its electrical workshop. EAGLE board designs are exported to gerber and excellon files and after making some adjustments in a CAM tool like CircuitCAM designs can be used for milling out copper-clad boards. The machine isolates all traces on the board and drills holes where necessary.
The technique which is covered here employs a chemical process to create PCBs. To put it simply it is a four step procedure:
The industry also these principle steps for mass production of PCBs.
Here is a list of supplies you probably need:
Optimally this process is executed in a chemistry lab. This is the list of needed tools:
The PCB design should already be finished and the artwork should be ready. If not there is a separate guide on how to create masks for uv exposure.
The following substances will be used:
Make yourself familiar with safety precautions for these substances and read the safety data sheets for them.
As stated in the beginning the following steps are normally performed in a proper lab after special security instructions and under supervision.
Put on your safety equipment. This includes glasses, lab coat and gloves. Make yourself familiar with the tools.