I've been building a custom stratocaster for a while now, and mounting the bridge is the last thing I have to do. It's a string-through hardtail body, so how do I line up where I need to mount the bridge? I have all the tools I could possibly need, and i really appreciate any help.
Make sure that your scale length is right.
/\ /\ That. And make sure you have your middle line drawn so it lines up properly.
I usually use some wire/thread/string as temporary string to make sure string spacing is right.