Defective Key Blanks

People who’ve gotten their keys copied at hardware stores or big box outlets often ask me why the key copies don’t work. What is so hard about cutting a key?

Lesson number one, if a key is defective from the factory, i.e. mis-stamped, mis-milled, milled backwards or upside down, there is no way that key will ever work in a lock. But it can still be cut. Here’s what I mean…

The only key blanks that would work are the ones on the bottom row. The rest are factory defects!


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