Home › Forums › NEW!!! The CLOCKMAKERS Forum – Designing, Building & Parts Fabrication › Making a steel click spring
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July 12, 2015 at 1:06 pm #49627
There are many types and styles of click springs for our mechanical clocks. This particular one is for a Gustav Becker P-42 time and strike wall clock movement. Notice the previous repair on the left and the right one was pretty rough, though they both functioned, I found it enjoyable to remake both pieces to look as original as possible.
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This topic was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 1:23 pm #62986I know I could have sourced a spring from a supplier but I found it a great learning experience to fabricate one myself, not only that but some styles you cannot find the style needed. Here is the original that is in rough shape. I used this one as a template
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 1:28 pm #62987A good way to hold my template to the steel
Traced out, rough cut and ready for filing or grinding to size and shape.
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 1:33 pm #62988Using the watchmakers lathe the small cutoff disk was perfect for grinding out the slot for the tab, and some other areas. I just used a paper towel to cover the headstock
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 1:53 pm #62989Final filing, using the top of the vise as a straight edge works well.
Finding where the screw hole goes I drilled those out. Mounted in the vise I used a very careful tapping with a hammer and large punch, the bend does not have to be a sharp angle but it does have to be in the right spot. What I mean is when it is sitting on the plate the spring will have a bit of clearance so it doesnt rub the plate.
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 1:57 pm #62990Before moving forward I checked the clearance of the spring and the tab and hole alignment.
Using a round nose pliers I bent the shape to be similar to the original. I say similar because the original was tweaked a bit out of shape.
A quick test of function before hardening.
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 2:04 pm #62991Wrapping in iron binding wire I wanted to make sure that when I heated it up it would not expand too far.
After polishing, heat treating, a careful test to see if the spring was in the right spot (so I didnt break them), tempered and ready for the movement.
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 2:07 pm #62992A test before working on the movement.
Looks alot nicer than before doesn’t it? The customer really like the fact that I did this for his clock.
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This reply was modified 3 years ago by
Tamas Richard.
July 12, 2015 at 3:51 pm #62993Sweeeet!!!
I love good craftsmanship!Ren
July 12, 2015 at 6:16 pm #62994Great job on the click springs William, they look original. Also really like the step by step how to pics.
Jim
July 13, 2015 at 6:14 am #62995Thank you Ren and Jim. Have fun, William
July 13, 2015 at 4:11 pm #62996Click springs look great William. I have had to do a few of those that were jury-rigged in movements.
July 15, 2015 at 1:36 pm #62997Thanks William, keep up the good work. Brian.
July 15, 2015 at 1:56 pm #62998Thanks Bernie and Brian, your comments are encouraging. Have a great day, William
July 16, 2015 at 5:08 am #62999Nicely done, thanks for the explanation!
Jan
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