Large Easy Build Clock with 21 Day Runtime
$12.00 Large Easy Build Clock with 21 Day Runtime
3D
Published 2021-03-08T09:17:10+00:00
SP4: This is the largest version in my easy to build clock series. It has been completely re-designed to minimize the number of non-printed parts.
A video of the clock and its smaller sibling can be seen at https://youtu.be/djp73Q6tXZA The larger clock is shown about halfway into the video.
Go to https://www.stevesclocks.com/sp4 to download the latest assembly guide.
Use the forum at https://www.stevesclocks.com/forum to discuss clock making topics or assembly issues.
Assembly is very similar to the smaller version of the clock. They can be seen at
Part 1 - Subcomponent assembly https://youtu.be/gM1UZuv43u4
Part 2 - Final assembly https://youtu.be/SawrNzYoE2A
Part 3 - Debug hints https://youtu.be/uQcfjhecORE
This is a great starter clock because of the simplified construction. Various options are provided with runtimes ranging from 4.6 days to 21.5 days. 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. I have noticed that the gears run better when printed using normal PLA, even though silk PLA can produce really nice looking gears.
The list of non-printed components is half the size of my other designs. The complete bill of materials is:
~1.2kg PLA filament in multiple colors
25 6x3/4" wood screws
18" 3mm metal rod
9" 1.5mm or 1/16" metal rod
12' fishing line
5-10 lb. BBs or lead shot for the weight shell
5 623RS (3x10x4mm) bearings
4 springs from a ball point pen
44 pennies for the pendulum bob
Parts can be sourced locally through Amazon, eBay, Ace Hardware, etc. I also have put together some parts kits at https://www.etsy.com/listing/1680180262 if you prefer.
Total print time is around 100 hours. This design needs a printer with a bed size of at least 210x210x150mm. A Prusa MK3S, Creality Ender3, or other similarly sized machine will work great.
Multiple clock faces are included with simple numbers or roman numerals. Different hand styles and weight shell sizes are also included.
A smaller version of this clock is also available (https://www.myminifactory.com/object/3d-print-156759) with a 32 day runtime. The lighter weight gears need less energy so the runtime was increased. You have a choice between the larger more visually impressive clock or the smaller more technically impressive clock. Either one would look great on your wall.
Steve
Update 10-Apr-22: Refreshed gears 3 and 4 to add a slight helical angle so gear 3 pushes away from the escapement. This change will significantly reduce the possibility of the escapement stalling and stopping the clock. The gears affected are gear3_64_15_1.stl and gear4_70_??_??day_1.stl. The file names have a "_1" suffixe added by MyMiniFactory to indicate a revision. It is worth downloading these gears and re-printing them even if you have a functional clock.
Update 02-Sep-23: Added Rev 2 updates to completely isolate the escapement from gear 3. This is an even better fix than the previous helical gear update and is recommended for all new designs and as a retrofit for existing clocks. Also gear 4b has an optional set screw for easier assembly. All new files have a "rev2" suffix in the file names. A complete description is in the rev2 addendum pdf. The files can also be found at https://www.myminifactory.com/object/3d-print-wall-clock-rev-2-updates-321782
Print everything in PLA using a standard 0.4mm nozzle. Additional instructions are in the included assembly manual.
| Date published | 08/03/2021 |
| Price | $12.00 |
| Tempo per farlo | - 1 Minuti |
| Quantità di filamento | 1.2kg |
| Dimensioni | 210mm x 210mm x 150mm |
| Supporto Gratuito | YES |
Thank you for the great design. Files and instructions where clear and easy to follow, and the hardest part was to decide what wall to hang it on. I have a small play in the minute hand, but I intend to fix it with a small drop og hot glue. Haven't adjusted anything yet, it's been running quite perfect now for just over an hour. Printed in the colors PLA Maroon, PLA Sky Blue and PLA Silk Dark blue, all from Polyalchemy.