Benjamin Franklin Clock with backing plate, different bob and pennyweight

This the Benjamin Franklin Clock version that B&B TECH Shared. However, I wanted a better mounting for the clock.
57m
1× print file
0.20 mm
0.40 mm
12.00 g
7
34
0
525
updated May 25, 2023

Description

PDF

This the Benjamin Franklin Clock version that B&B TECH shared.  However, I wanted a better mounting for the clock and a more appropriate pendulum bob that suited my 6mm dowel.  I also had lead sinkers on hand to use as weights and therefore I needed to use a pennyweight design without the hole. I found a design that suited from BRE (Thingiverse) and all I needed to do was modify the length of it. 

I had a couple of challenges with the build which I'll share with you. I would also like to thank B&B TECH for sharing knowledge and experience with me on a number of occasions.

The major challenge was the backplate, I wanted something sturdy, printable on my Mini+ and easily mounted on the wall. The result of all that is model included here.  There were a couple of post-production changes that I had to make to help with the continued running of the clock. 

I originally planned to use the circular indents in the bottom of the backplate to lock in the bottom feet. Initially the clock wouldn't work for long so just in case, I reversed the backplate to keep the clock level.  I've also changed the top of the backplate to be a slot rather than just a hole to help with fixing the clock to the backplate. 

I've included a file for that I changed but I haven't printed it. I used a drill and file to make the slot in the one I printed.

I also think the movement of the gear wheel works better with the cord near the outer rim of the middle gear rather than near the centre.  I manually added a couple of indents to keep the cord at the extreme of the gear. I added the indents manually but I've added a .stl file that has the indents I would use in the future.  I could be wrong about this as I'm not an expert, just trying things out.

Finally, some things I discovered by trial and error.

  1. Don't glue the clock to the back plate as more than likely,  you'll need to make fine adjustments.
  2. Use some form of lubricant, graphite works well.  Candle wax seemed to clog up the gears. I used a lead pencil to add some graphite to each gear tooth.

In all this has been a great build for me and I think I will be able to use the backplate on other builds in the future.

https://youtube.com/shorts/KGO80YCoh-c?feature=share

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The author remixed this model.

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