The Makers Magnetic Sandy Clock

prusaprinters

<figure class="media"><oembed url="https://youtu.be/-od0kKGaSKs"></oembed></figure><p>Update - 29/09/2020<br>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.</p><p>To see how to carry out filament changes mid-print, please refer to the link below.<br><a href="https://help.prusa3d.com/en/article/color-change_1687">https://help.prusa3d.com/en/article/color-change_1687</a></p><p>27/09/2020</p><p>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.<br>This clock is quite calming to stare at and I have become fond of its minimalist look.<br>Its actually quite easy to assemble. But does use a fair amount of filament (sorry about that).</p><p>There is a quick timelapse video I recorded of it in use. Sorry about the quality.<br><a href="https://www.instagram.com/p/CFoq1lGjhyP/">https://www.instagram.com/p/CFoq1lGjhyP/</a></p><p>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!!!<br><a href="https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></p><p>15mm dia x 2mm thick N35 Neodymium Magnet - 1.8kg Pull<br><a href="https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&amp;psc=1</a></p><p>I used Orange Sand. But use any colour you like. Please note, I haven't tested this with Kinetic Sand.<br><a href="https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&amp;psc=1</a></p><p>A 150mm x 150mm x 3mm Clear Acrylic Sheet.<br><a href="https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&amp;psc=1</a></p><p>6mm Carbon Steel Ball Bearings<br><a href="https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></p><p>And one AA battery.</p><p>Please read the below print instructions and refer to the images for build.</p><h3>Print instructions</h3><p>To see how to carry out filament changes mid-print, please refer to the link below.<br><a href="https://help.prusa3d.com/en/article/color-change_1687">https://help.prusa3d.com/en/article/color-change_1687</a></p><p>I printed the parts at 0.2mm layer height in PLA.<br>Also, sorry, it uses a fair amount of filament. I also added some small rubber feet to the base.</p><p>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!!!<br><a href="https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B084LT62X6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></p><p>I also used two 15mm dia x 2mm thick N35 Neodymium Magnet - 1.8kg Pull<br><a href="https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B00TACL9QI/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&amp;psc=1</a></p><p>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.<br><a href="https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B07JZW58LH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&amp;psc=1</a></p><p>A 150mm x 150mm x 3mm Clear Acrylic Sheet.<br><a href="https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B07RGWT24B/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&amp;psc=1</a></p><p>6mm Carbon Steel Ball Bearings<br><a href="https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.co.uk/gp/product/B00HDL3KY2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></p><p>And one AA battery.</p><p>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.</p><p>Any problems or questions, just send me a message.</p><p>Happy printing. :-)</p><p>Neil</p>