Weekclock - Modded Version

This design is a remix of Magne's “Weekclock with planetary gear". I had some issues with the original design files (especially it did not fit my clockworks…), so I made some modifications and decided to publish the result here.

Changes to the original design

• The main modification is how the clockwork is mounted. I got rid of the original two-part housing and adjusted dimensions to make it compatible to the standard clockworks I found. The clockwork not simply mounts to a 8mm hole in the new “base”. So you have much more freedom to choose your clockwork:

• The sun gear now has a 5.5mm hole for the hour connector of the clockwork which seems more common. Also adjusted height in combination with the new base.
• Since I like it more to print visible surfaces on the textured sheet, I adjusted the clockface so that the characters are engraved rather than printed on top of the part. There are German an English clockfaces available. Also I rounded the edges:

The only this I did not alter from the original design are the planet gears. Not that you can still use the clockfaces from the original design and do not need to change to this design.

Printing

I have printed all parts in PETG, but PLA should also work fine. I have provided the STL files  and the 3mf files containing all the settings. Also there are the gcode files for the MK3s. Here are some hints for slicing and printing the parts:

	base: 0.3mm layer height
	planetgear: 0.3mm layer height - I recommend doing a color change when arriving at the smaller gear. You have to print 3 of these.
	sungear: 0.3mm layer height
	clockface_german / clockface_english: Two color print with color change after two layers (first black, then color). I have used the variable layer height feature which allowed a print with 0.2mm+0.15mm layer height for the bottom layers and 0.3mm after the color change. Note that the two cylinders are "smear towers". I use them for color change prints to get a cleaner print. Note that you can also print clockfaces from the origional design instead.

Assembly

Assembling the clock is straightforward. Use a clockwork that comes with a hanger. Mine is a standard one I got from Amazon and it looks like this:

The length of the thread is not critical, as you can place washers or similar underneath.

Also you will need 3pcs 608 ball bearings for the planet gears.

Design and Source Code

The base has been implemented from scratch. The other parts have be modded from the original design by importing them in OpenSCAD. Only the planet gear is not altered. I have provided the source code for download, so you can adjust the design to your needs.

Changelog

• July 3 2021: Added the 3mf files (file upload is no longer broken)

Happy printing!

If you like this design, then please leave a like and also post a photo in the comments. Also check out my other designs.