LEGO technic gear inspired clock x187

Hello everyone,

there are several nice models for lego technic inspired clocks based on the old 24 teeth x187 gear. I found these:

• https://cults3d.com/de/modell-3d/haus/horloge-clock-lego-technic-gear-engrenage
• https://www.printables.com/model/291748-large-lego-technic-clock 

As it didn't fit my printer and I didn't like how the stand was done, I set out to improve upon the idea. 

On amazon I found this high torque clockwork (https://amzn.eu/d/7Ee7h1c) and based my design on it. It measures 56mm x 56 mm and has a 32mm long spindle (25mm screwing length). I think the body dimensions are more or less standard. There is some room for adaptability if you remix the axle cap and you could potentially use a shorter spindle length, but there's just 4.6mm room:

First I rotated the gear, so the 4 holes become the prefect places for the numbers. It surprisingly looks almost like a popular watch face on the Apple Watch. These are printed with a filament change mid print. I tried some glowing PLA, but in the end it stuck to a classic black and white combo. 

The material for all the grey parts is Prusament PETG urban grey. The color is very similar to the original LEGO technic parts. For the clock hands I used PETG lipstick red and PLA jet black. I should have printed the red hands in PLA, but I didn't had a roll of red PLA on hand. My clock hands suffer a bit from stringing, but with PLA you should be ok.

The back of the clock is connected with printed LEGO technic axles. Moreover it can be fixed with standard LEGO technic connectors, that you might have leftover from some Lego models. I attached the remixed connectors, but in the end the 4 axles had enough retention and I didn't trust the rigidity of the printed parts.

For better printability I split the main body into two parts and made a second back part that is also connected and aligned with 12 self printed axles. Here I used some super glue to stick the two parts together.

As for the printed LEGO technic axles, I used vase mode, so I they are dimensionally ok and can be inserted easily. All the axles (and some spares) are printed sequentially with a need little trick to get some material in the inside:

There is a flat side on the 6 o'clock position, so it doesn't roll around, if you want to have the clock standing upright. In the hole of the 12 o’clock there’s also a slot for hanging it on the wall. You don’t have to use the cover piece of the back anymore, to have it sitting flat on the wall. But if you prefer it with the back part there’s also a slot for that. 
If you prefer the clock on an angle, I came up with using another LEGO technic piece that can be stuck into the 4 holes of the gear, just a little bit bigger :). It just slides in and is held in place by a slight interference fit.

I'm really happy how it came out and it was the perfect gift for a dear lego enthusiast :)