I've made my first ever pcb myself and the etching and drilling all look pretty good at this point. I am still not sure, however, what to do about the vias. I have about 15 holes that I need to make sure a connection is made from one side to another. On a professionally fabricated board they would have copper running through, but I am not that awesome.
Should I just fill it with a glob of solder, or should I actually put some wire in it or something?
Also, some of my holes for components have wires on the top and some have wires on the bottom. How can I be sure that a solid contact is made with both sides of the hole? It seems like it would be difficult to get right under an ic to solder it to the board on both sides. It looks like the thick part of the leads make a pretty good contact, but I would like to be sure. For resistors and other smaller parts it is not so obvious that it touches both pads.
I'm hoping that if I just make sure my iron is hot and make good joints it should flow through and contact both sides. Any tricks for making sure I get good contact on both sides?