Update - 29/09/2020
I have removed the 3D printable stand from download as keeping the clock at that high an angle does effect the sand and the strength of the movement. I will design another stand with a lower angle and see how well the clock copes. If all good then I will share the new stand.

To see how to carry out filament changes mid-print, please refer to the link below.
[https://help.prusa3d.com/en/article/color-change_1687](https://help.prusa3d.com/en/article/color-change_1687)

27/09/2020

This is a magnetic clock that uses ball bearings as hands over a thin layer of sand. Over time, the ball bearings leave trails for the hour and minute circular routes.
This clock is quite calming to stare at and I have become fond of its minimalist look.
Its actually quite easy to assemble. But does use a fair amount of filament (sorry about that).

There is a quick timelapse video I recorded of it in use. Sorry about the quality.
[https://www.instagram.com/p/CFoq1lGjhyP/](https://www.instagram.com/p/CFoq1lGjhyP/)

You will need a high torque clock movement. I used the one below. If you want to use another, check the dimensions, including the dimensions of the stem. This is important!!!
[https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

15mm dia x 2mm thick N35 Neodymium Magnet - 1.8kg Pull
[https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1)

I used Orange Sand. But use any colour you like. Please note, I haven't tested this with Kinetic Sand.
[https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1)

A 150mm x 150mm x 3mm Clear Acrylic Sheet.
[https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1)

6mm Carbon Steel Ball Bearings
[https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

And one AA battery.

Please read the below print instructions and refer to the images for build.

Print instructions

To see how to carry out filament changes mid-print, please refer to the link below.
[https://help.prusa3d.com/en/article/color-change_1687](https://help.prusa3d.com/en/article/color-change_1687)

I printed the parts at 0.2mm layer height in PLA.
Also, sorry, it uses a fair amount of filament. I also added some small rubber feet to the base.

You will need a high torque clock movement. I used the one below, but if you want to use another, check the dimensions, including the dimensions of the stem. This is important!!!
[https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

I also used two 15mm dia x 2mm thick N35 Neodymium Magnet - 1.8kg Pull
[https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1)

I used orange Sand. But use any colour you like. Please note, I haven't tested this with Kinetic Sand. So I cannot tell you how well it would work with Kinetic Sand.
[https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1)

A 150mm x 150mm x 3mm Clear Acrylic Sheet.
[https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1)

6mm Carbon Steel Ball Bearings
[https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1](https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)

And one AA battery.

The only parts glued together are the Hands with the magnets. Everything else just fits together loose in case you need to gain access to the hands, movement or bearings.

Any problems or questions, just send me a message.

Happy printing. :-)

Neil