
Recently a client requested a lock be retro-fitted to one of my Wall-Mounted Jewelry Cabinets (click here for an example) that her husband had purchased the year before as a gift. Installing the lock on the finished cabinet was stressful enough, but then, once again, I was faced with an unhappy choice of keys for the lock, as above. In the past I had been able to modify the key supplied with the lock and end up with something reasonable, but that was not going to be possible this time around. I decided to make one from scratch as the functional part of the key was so simple.
First I chucked some 1/8″ brass rod into my drill press, lowered it down into a vise (which was clamped securely to the drill press table), grabbed a hold of it in the vise and then loosened the chuck. Now I was able to drill the necessary centered hole in what would become the end of the key shaft. I started with a very small bit and worked my way up using four successive bit sizes to the ending diameter. Next I silver-soldered a tab of brass to the end of the key shaft. The mating surface of the tab was arced to conform to the shaft using an 1/8″ round file. Then I made a wooden knob drilled for a snug slip fit to the shaft, positioned it and drilled for a fixing pin made from a brass brad:
The resultant key is much more suitable and my client was very pleased with the result. Sadly, that is not the end of the story. A few weeks later, I hear back that the tab of the key has broken off in the lock! Well, I’m no metal-smith and this experience certainly proved that. Luckily a world-class metal-smith lives and works right across the river from me, my friend Mark Read. I went to Mark for some trouble-shooting. First, he determined that I did not use silver-solder — the remaining film of solder was much too soft for that. Then I got a nice little lesson in quality silver soldering. I’m very confident that Mark’s work will stand up well to everyday use.
Until next time
df
What a vey cool little key!