I need to drill some fairly accurate holes at an angle through some aluminum square tubing (or whatever you call tubing that's square instead of round).
I guess the main problem is that my cheap drill press has some play in it so that the bit doesn't necessarily follow the intended path straight down. So when I put the metal at an angle, the bit is going to move towards the deeper side as it drills into the metal.
... should I use something to press on the spinning chuck shaft so that it drills closer to correct?
... if I were to drill straight down through the aluminum with a smaller diameter bit, when the aluminum is angled will the larger drill bit end up going through the center of that hole? (Yes, this is easy enough to test)
... is there some trick I don't know about?