PCB News - Double-sided, multi-layer board copy method

Double-sided copy board method:

1. Scan the upper and lower layers of the circuit board and save two BMP pictures.

2. Open the copy board software Quickpcb2005, click "File" "Open Base Map" to open a scanned picture. Use PAGEUP to zoom in on the screen, see the pad, press PP to place a pad, see the line and follow the PT to route... Just like a child drawing, draw it in this software, click "save" to generate a B2P file.

3. Click "File" and "Open Base Image" to open another layer of scanned color image;

4. Click "File" and "Open" again to open the B2P file saved earlier. We see the newly copied board, stacked on top of this picture-the same PCB board, the holes are in the same position, but the circuit connections are different . So we press "Options"-"Layer Settings", turn off the top-level line and silk screen, leaving only multi-layer board vias.

5. The vias on the top layer are in the same position as the vias on the bottom picture. Now we can trace the lines on the bottom layer as we did in childhood. Click "Save" again-the B2P file now has two layers of information on the top and bottom layers.

6. Click "File" and "Export as PCB File", and you can get a PCB file with two layers of data. You can change the board or output the schematic diagram or send it directly to the PCB plate factory for production.

Multilayer board copy method:
In fact, the four-layer board copying is repeated copying two double-sided boards, and the sixth layer is repeated copying three double-sided boards... The reason why the multi-layer board is daunting is because we cannot see the internal wiring. How do we see the inner layers of a precision multilayer board?-Layered.

There are many methods of layering, such as potion corrosion, tool stripping, etc., but it is easy to separate the layers and lose data. Experience tells us that sandpaper polishing is accurate.

When we finish copying the top and bottom layers of the PCB, we usually use sandpaper to polish the surface layer to show the inner layer; sandpaper is ordinary sandpaper sold in hardware stores, generally flat PCB, and then hold the sandpaper and rub evenly on the PCB (If the board is small, you can also flatten the sandpaper, and rub the sandpaper while pressing the PCB with one finger). The main point is to pave it flat so that it can be ground evenly.
The silk screen and green oil are generally wiped off, and the copper wire and copper skin should be wiped a few times. Generally speaking, the Bluetooth board can be wiped in a few minutes, and the memory stick will take about ten minutes; of course, if you have more energy, it will take less time; if you have less energy, it will take more time.

Grinding board is currently a popular solution for layering, and it is also economical. We can find a discarded PCB and try it. In fact, grinding the board is not technically difficult, but it is a bit boring.