So some jerk (not you, it's never you) accidentally cross-threaded a bolt, and now you're stuck trying to clean up said jerk's mess. If the bolt is removable and replaceable, no problem; but what about when you can't get it out of your part, and/or the store is closed? Enter the DOMOM Deburring Tool:
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On the one hand, this is one of those tools that looks so satisfying to use that I'd look forward to encountering the problem it was designed to fix.
On the other hand, they make it look easy--too easy. I'm always suspicious of such videos. Have any of you actually tried this thing?