LPT: When you get a new lock, buy a new house, or something like that always save one of the keys for future copies. This can be the safety key you leave with someone, but the point is never to use it, so when you do wear down your key, you make a replacement with the pristine one. Submitted by pSilver68932 t3_z8uxhv on November 30, 2022 at 3:51 PM in LifeProTips 9 comments 16