Precautions for manufacturing thick copper PCB

We need to pay attention to the following five things when we manufacture thick copper PCB:

1. Check process documents, read process requirements and be familiar with the blueprint of substrate machining;

2. Check the surface of the substrate for scratches, indentations, exposed copper parts, etc.;

3. According to the mechanical processing floppy disk, carry out the trial processing, carry out the first piece pre-inspection, and then carry out the processing of all the workpieces in accordance with the technological requirements;

4. Prepare the measuring tools and other tools used to monitor the geometric dimensions of the substrate;

5. According to the nature of the raw material of the processed substrate, select the appropriate milling tool (milling cutter).