About 260 years ago, Benjamin Franklin designed a clock with one hand that told both the hours and minutes. You can read more about it here:
https://founders.archives.gov/documents/Franklin/01-08-02-0060
Aside from the 3D printed parts you will need (approximate):
1 yard long by 1/4 inch wooden dowel
3mm stainless steel rods (search for 3mm RC rods)
$2 in US pennies for the drive weight
1.5 yards of mason line
a paperclip or something else for the drive weight hook
I was inspired to create the clock after finding that the clock faces had been modeled. Here's the summary from jamcultur from his "Benjamin Franklin clock dial":
"Franklin's design never caught on, but clocks based on it have been produced in limited quantities from time to time, for example, an electric version by Paragon in the 1960s, a weight-driven version by Thwaites and Reed in the 1970s, and a wrist watch by Meistersinger in 2015. For more information, see http://www.ablogtowatch.com/meistersinger-benjamin-franklin-watch/
My 3D printed version of the Franklin clock dial is very similar to other versions, except that I replaced the Roman numerals with conventional numerals. I designed it with raised lines and numerals so that I could color them with a sharpie after printing. The small dial is for the seconds hand."
In addition to using the clock faces from another project, I also used the escapement and pallet from A26's "Clock"
UPDATE: Thanks to Thingiverse user Mhrinik you now have the option of some front and back braces to cover the dovetail joints of the frame if you find them too flexible.
| bfc-bob.stl | 13.2KB | |
| bfc-escapement.stl | 525.5KB | |
| bfc-frame-bottom-feet.stl | 25.7KB | |
| bfc-frame-bottom-lower.stl | 20.5KB | |
| bfc-frame-bottom-upper.stl | 20.7KB | |
| bfc-frame-top-lower.stl | 18.1KB | |
| bfc-frame-top-upper.stl | 33.4KB | |
| bfc-hours-minutes-drum-cap.stl | 25.0KB | |
| bfc-hours-minutes-gear.stl | 837.6KB | |
| bfc-hours-minutes-hand.stl | 16.7KB | |
| bfc-hours-minutes.stl | 2.2MB | |
| bfc-middle-gear.stl | 1.1MB | |
| bfc-pallet-back.stl | 64.6KB | |
| bfc-pallet-dovetail.stl | 8.7KB | |
| bfc-pallet.stl | 46.0KB | |
| bfc-pennyweight-top.stl | 63.8KB | |
| bfc-pennyweight.stl | 705.1KB | |
| bfc-seconds-hand.stl | 16.7KB | |
| bfc-seconds.stl | 270.9KB | |
| brace4sturdy.stl | 5.6KB | |
| brace4sturdybk.stl | 7.5KB |
