In my work as a finish carpenter, I'm sometimes called on to hang a new door blank in an existing opening. I described this process in a previous article ("Hanging a New Door in an Old Jamb,"8/99). Here, I'll discuss the rest of the job — drilling and mortising the latchset.

In most cases, the latchset is mounted between 35 and 38 inches from the floor, but on panel doors, the latchset should be centered in the lock rail. Always drill the face bore first, then the edge bore (see Figure 1). This takes the guesswork out of the edge bore — when the bit falls into the hole, you're done.

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