Renovation of 120 Years Old Clock

by shiura in Workshop > Repair

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Renovation of 120 Years Old Clock

Renovation of 120 years old clock
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I got a broken120 years old pendulum clock. In my first thought, I planned to swap the stuck movement to some modern one such as wave clocks. However, after some CLA (cleaning, lubrication and adjustment), the old movement started working. So I just restore the appearance of the clock with some modifications -- so I call it not "restore" but "renovate" -- using 2D and 3D printers to replace the clock face and windshield.

note: Please check your old clock whether that is valuable and worth not renovation but restoration. In my case, the clock was in very bad condition (some parts lost, badly repaired before, etc). Please take a look at the comments by professionals at the end of this page.

Supplies

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  • Old clock. In my case, I renovated a 120 years old clock made by Nippon Tokei KK (Japan Clock-Making Co.), Osaka Japan between 1896 and 1901.
  • Since the windshield glass is lost, I got a cheap clock (below 3USD) with a dome glass of adequate size.
  • Cleaning fluid (gasoline)
  • Lubricant (light oil)
  • Paint and oil stain for wood coloring
  • 2D and 3D printers are used

CLA of Movement

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CLA (cleaning, lubrication and adjustment) of the clock movement

  • Firstly I cleaned the movement with gasoline since it was stuck with degraded sticky oil like coal tar.
  • I lubricated and adjusted here and there, then it works perfectly.
  • During adjustment, please make sure that the clock movement is precisely upright. It is very sensitive to tilt.
  • If the pendulum is not balanced (uneven interval of two click sounds of one round-trip of the pendulum) even if the clock movement is upright, slightly bend a bar to connect the escapement and pendulum, as shown in the picture above.
  • All pivots (holes for arbors) at front and back of clock plates should be lubricated with minimum amount of oil (one drop).

Repaint

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  • If possible, disassemble the parts of the body.
  • Remove old paint with sanding paper.
  • Use some putty to fill holes and gaps.
  • Paint with varnish or oil stain, as you like. In my case, I used matte black splay for the rims.

Making Clock Face and Windshield

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Since the original clockface is broken and ugly, I made it from scratch. I also added a hinged windshield.

If you want original files, please contact to me via comment (Uploading Blender and PowerPoint files prohibited).

  • 3D model is designed using Blender.
  • Clockface is designed using PowerPoint.

Finish

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  • Assemble all parts.
  • Polish the weight of the pendulum.
  • Hang the clock. Do not tilt, it should be precisely uplight left and right, front and back.
  • If you move the clock, firstly remove the weight of the pendulum, move and hang, then attach the weight again.