I have a nice little Delta drill press that came with a laser, which makes a neat crosshair on the surface being drilled. The only problem is that while the press plugs into the wall, the laser relies on a 9-volt battery for some reason. I've noticed that if you forget to turn the laser off, it will eat a brand new battery up in about 24 hours. I love the laser, but am appalled by the potential for waste. Why couldn't they engineer the laser into the rest of the electronics on the drill press? I'm wondering if it would be possible to dig up a 9-volt transformer from some long-dead electronic gizmo and power the laser that way. Would it just be a matter of connecting the wires from the transformer to the battery leads and plugging the thing in, or is there more to it than that?