Solderless Terminal Hole

I've got the assortment...

But it seems that regularly I've got a post that's too big for the hole in the solder-less terminal.

Hey, no problem - just run a bigger drill bit through tat smaller hole.

It happens every time - time and again. But no more with this setup.

A Step Drill and a light touch on the drill press.

If you keep a sharp eye out you can pick up a set of step drills from Harbor Freight (Home of the Single Use Tool) for about half of the regular price. 
These are great for holes in thin metal and I suppose other stuff as well?