Shadow74
Multi-rotor madman
The other thing that you could do you, is go to a local hardware store and get a small round bubble level. Stick it on the back of your drill and when your drilling you can watch the level to make sure that it's 90 degrees.
In fact I think there is an app for droid and iphone.... that does this as well.
Just a thought. ;-)
In fact I think there is an app for droid and iphone.... that does this as well.
Just a thought. ;-)
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