This year the mosquitoes have been worse than I have ever seen. I have a head net. This is how I have been able to work in the garden, walk, ride my bike, and do a few other things. But it has also started to rain. Good for the garden. Bad for outdoor work. The long and the short of it is that I have some indoors time. I have spent it on the Wood Clock. You will recall that we had gotten it to its semifinal state, but time out was taken to finish the wood. So one rainy (or mosquito-y) day I put the thing together again.
With the "clock" I found the wheel diameters varied between +40 and -40 thou (sorry, it's an Imperial Indicator) and that's a bit too much. Lots of reasons for this. One is that the shafts, or arbors, might have warped. Another is that the humidity is much higher. Another is that the arbors are probably off center. A real menace, but a drill bit drills neither round nor to size, and this causes wobble. Lastly, the plates themselves may have warped a bit.On the other hand the pinions were plus or minus 0.010" which seemed quite respectable. I went for the wheels, since they seemed to be the main culprits.
So I went wheel/pinion pair by pair and got them to spin freely again. This is a tedious task indeed. You have to sand until everything spins. On the third wheel I had to cut the teeth deeper, and I used the invaluable Dremel for the purpose. I did say it was tedious and I do not think it redundant to say again that it was tedious.
However, at the end...
All the wooden clocks I have seen on the You Tube videos use steel arbors (shafts) and I think this is a much better idea than wooden shafts, even with the steel pivots. Steel does not warp as much as wood. But I followed the original plans and the book, and I learned something!
Meanwhile, I notice that nobody, myself included, can resist spinning the clock as they walk by. It is a Zen contraption.
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