Benjamin Franklin Clock with backing plate, different bob and pennyweight
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This the Benjamin Franklin Clock version that B&B TECH Shared. However, I wanted a better mounting for the clock.
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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.
- Don't glue the clock to the back plate as more than likely, you'll need to make fine adjustments.
- 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