Hello, I am the new person, and can't find any info on how vias are created on a PCB when manufacturing. I 'm really curious about how they do it. Does anyone know?
Thanks in advance!
My understanding is that the holes are drilled first to the PCB blank, then a plating process is applied to the whole blank so that both the holes and the copper surface are plated, then the copper is etched to the circuit pattern.
Try this, there is an explanation of the plating process in the list;
Type "circuit board factory" into Youtube and see.
// Per.
Drill hole, electro-plate with copper. Last time, I got into similar trouble with my boards, luckily, there is a PCB house who told me how to do it. maybe you can try it with this way.
Of course to electro-plate you first have to deposit a conductive layer by chemical means, and one
that bonds solidly to the pcb material and the copper so it doesn't flake off after plating - that's the
clever bit.
Some years ago, I remember using a system that used some very small rivets to fit vias to 'home made' PCBs.
The rivets were in a long strip, you pushed the end one into a pre-drilled hole, and then snapped it off. The process was completed by riveting using a modified automatic centre-punch.
You can also drill a small hole where you want a via and just solder a wire on both sides of your board of the same wire.