In my previous post about this clock I ordered a replacement pendulum suspension rod and bob, because the originals were missing. In this post I cut the suspension rod to length and adjust the speed of the clock, using audio recording to measure the timing of the tick-tock.
Since I was making good progress on my first clock, I decided to haunt the antique malls looking for a second one to repair. I wasn’t really planning to buy a clock until I’d finished the first, but I found the perfect second clock to work on.
In my previous post I calculated the theoretical length of the pendulum my Korean 30-day clock requires. You may recall that the clock as I bought it had a broken pendulum suspension spring, and the pendulum parts – the suspension rod and bob – were missing. In this post I order replacement pendulum parts.
In my previous post I finished cleaning my junker clock, ending up with a jumble of gears and other parts. You may recall that when I disassembled this clock, parts sort of fell out willy-nilly, leaving me a bit fuzzy about what gears go where. In this post, I figure out which gears are part of the Going (time) Train (gear set), and as a bonus I calculate the length of pendulum this clock requires.
In my previous post I showed the early results of my cleaning of my junker clock by hand. In this post I show why cleaning by hand isn’t really very effective at removing old oil and dirt.
In my previous post, I disassembled my junker, practice clock. In this post, I begin to clean it. The pro’s use an ultrasonic cleaner, but I’m on a budget, so I’m doing it by hand.
In my previous post I covered the dangers of mainsprings, and bought the minimum of tools required to safely handle mainsprings. In this post I disassemble my junker clock.
Using my new mainspring clamps and Let Down key, I “let down” (unwound) the chime mainspring and time mainspring, following the process I’d seen in the videos: Continue reading Clock Repair 101: Disassembly / Destruction
In my previous post I explained how I got started on this strange path to clock repair. In this post I talk about the dangers, some videos, and my first clock repair tools. Continue reading Clock Repair 101: A time bomb waiting to go off
The Dark Arts of clock repair open before me. I feel the need to wear flannel. …to create a basement workshop. …and to live where it snows most of the year. What brought this malady on? A clock.
(first published on Needhamia.com in 2007)
I find the rose windows of Gothic cathedrals awe-inspiring. From the rigid formalism of Chartres to the flamboyant explosion of Tours, their marriage of geometry, philosophy, and aesthetics with stone and glass is awesome. Built at a time when science and spirit weren’t as divided as today, each window is a statement of the beauty, order, and harmony in the world. Using only a pair of compasses (dividers) and a straight-edge (an unmarked ruler), the Gothic architects created myriad lace-like designs, making stone hang in the air and glass sing.