Trouble Installing Key Lock

Question

I ordered new mortise, key lock and thumb latch. Cut down the key lock to the exact same length as the old one but I've lost the thumb latch tail, just assumed it was full length. Now I have it all installed but the thumb latch tail looks like it should only be 3/4" as there is too much overlap. I assume the key lock tail and thumb latch tail should meet in the middle and be exactly the same length? Best way to cut it if that's what I need to do?

Thank you!

Dave Sr. · Accepted Answer

I personally find the best way to cut the tail was to secure it in a vise and cut it to the length you need using a hack saw. The trick to cut it a little at a time so that you don't accidentally cut it too short. It takes longer and it's a little more of a hassle, but it's better to be safe than sorry. The last thing you want to do is cut too much and ruin the piece.