How the conducting vias (from top layer to bottom layer) are made

Hi,

I have to make a 2 layer PCB and have to use a machine which can only drill and mill the material to be used for making PCB. The material to be used has copper on the top side and bottom side and between these sides is a substrate. What I don't understand/know is how to make conducting vias which can link traces on the top side to the bottom side?

In the real production of PCBs there is a complicated process with a bath of chemicals and using high current electricity. Search on the internet.

In home make boards; insert a wire in each "via" hole and hand solder both the top and bottom.

ronsimpson said:

In the real production of PCBs there is a complicated process with a bath of chemicals and using high current electricity. Search on the internet.

In home make boards; insert a wire in each "via" hole and hand solder both the top and bottom.

Click to expand...

Thank you very much.

Or you can buy ready made pices that you press into the hole and then solder. These wont tend to come out the other side as you do the second joint. Like these **broken link removed**