Everything was then assembled and he spent some time tuning the mechanism to reduce as much friction as possible and to get the timing worked out on the mechanism. I strong string was also found that could be used to suspend the weight. Meanwhile, he ordered and fabricated the few metal parts that he needed: the drive shaft (steel rod), the pendulum rod (aluminum tube), and the mass for the weight (stainless steel bar). This proved to be the most difficult part of the entire process. All of the sliding surfaces needed to be sanded and Acetone-Smoothed to get rid of any ridges that are a natural byproduct of the additive manufacturing process. The post-processing was important because he found early on that friction between the ABS parts could be significant. He then spent about 15 hours post-processing the parts. Black and Ivory ABS was used for all of the parts that were made on the 3D Printers. To speed things up he spread the job up over three of our machines: The FORTUS 400mc for the large white parts, the SST 1200es for the small black parts, and a few smaller parts here and there on the Elite. He then set to work building the parts on our fleet of Stratasys 3D Printers and Manufacturing Centers. It took about 20 hours to build up the CAD model in SolidWorks. He had to add a bit of thickness to the winding ratchet paul and added some brackets for rigidity because the ABS plastic is more flexible than wood. Starting with the free 2D drawings on the website, he created 3D Solids of the assembly making only a few changes. To make our clock, Justin took the Clock 1 design and modified it for use with the Stratasys FDM machines that we have in house. He is also considering putting out wristwatch designs. Do take a look at his website to see the very cool designs he has developed. The clock was built by our very own manufacturing engineer Justin Baxter based upon a design from a website called Brian Law’s Wooden Clocks ( Brian has a large array of very cool wooden clock designs that he has done for the hobbyist community. It defiantly attracts the attention of our mechanically minded customers. Its gears are exposed and you can not only hear it tick-toking away, but you can also see the gears moving, and watch the timing mechanism rock back and forth. It is worth downloading these gears and re-printing them even if you have a functional clock.If you visit the lobby of PADT’s Tempe office you will notice something very cool on the wall – a large white and black pendulum clock clicking away on the wall. The file names have a "_1" suffixe added by MyMiniFactory to indicate a revision. This change will significantly reduce the possibility of the escapement stalling and stopping the clock. Update 10-Apr-22: Refreshed gears 3 and 4 to add a slight helical angle so gear 3 pushes away from the escapement. Either one would look great on your wall. You have a choice between the larger more visually impressive clock or the smaller more technically impressive clock. The lighter weight gears need less energy so the runtime was increased. Different hand styles and weight shell sizes are also included.Ī smaller version of this clock is also available ( ) with a 32 day runtime. Multiple clock faces are included with simple numbers or roman numerals. A Prusa MK3S, Creality Ender3, or other similarly sized machine will work great. This design needs a printer with a bed size of at least 210x210x150mm. The list of non-printed components is half the size of my other designs. The complete bill of materials is:ĥ-10 lb. I have noticed that the gears run better when printed using normal PLA, even though silk PLA can produce really nice looking gears. The longest runtime of 21.5 days is a bit aggressive, but the 14.3 day option would be more reliable. The shorter runtimes will be the most reliable and winding a clock every week or two is pretty impressive for a clock that you build yourself. Various options are provided with runtimes ranging from 4.6 days to 21.5 days. This is a great starter clock because of the simplified construction. Use the forum at to discuss clock making topics or assembly issues.Īssembly is very similar to the smaller version of the clock. Go to to download the latest assembly guide. It has been completely re-designed to minimize the number of non-printed parts.Ī video of the clock and its smaller sibling can be seen at The larger clock is shown about halfway into the video. This is the largest version in my easy to build clock series.
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