Hooking up the drill to the power supply is easy and did not take me a lot of time.

The project could have ended here but I wanted something a little bit more safe and reliable. My plan is to improve this setup so that it would be easy to hook up the drill to the power supply.

Also, as an added feature, I should also be able to swap between corded and cordless at will. This will be done by modifying one of the old battery packs so that it would be wired.

Right now there are some issues that I hope to address. For example, my power supply currently can't handle the amount of power the drill needs when it needs to some heavy drilling. So right now I'm stuck with 12 volts if I want reliable use out of it.