Easy Build Clock with a 32 Day Runtime @stevesclocks

Steve Peterson This is an easy to build 3D printed clock that has runtimes of up to 32 days.

The initial design goal was to simplify the bill of materials to make it easy to acquire the non-printed parts. These changes made the clock very efficient and it has 32 days of runtime using only 5kg of weight. Options for shorter runtimes would need much less weight.

The first design shown is available at myminifactory.com/object/3d-print-32-day-clock-easy-build-156759

The large version of the clock seen in the second half of the video is available at myminifactory.com/object/3d-print-large-easy-build-clock-with-21-day-runtime-159691 The larger gear size take more energy so the runtime is limited to 21.5 days.

Assembly videos for both clocks should be available soon.

The complete bill of materials to build either clock is:
0.85kg PLA for small clock, 1.2kg PLA for large clock
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

Related videos:
Assembly part 1, basic components youtu.be/gM1UZuv43u4
Assembly part 2, final assembly youtu.be/SawrNzYoE2A
Debug steps youtu.be/uQcfjhecORE

Steve

updated 3 years ago

Easy Build Clock with a 32 Day Runtime

Steve Peterson 2021-02-26 | This is an easy to build 3D printed clock that has runtimes of up to 32 days.

The initial design goal was to simplify the bill of materials to make it easy to acquire the non-printed parts. These changes made the clock very efficient and it has 32 days of runtime using only 5kg of weight. Options for shorter runtimes would need much less weight.

The first design shown is available at myminifactory.com/object/3d-print-32-day-clock-easy-build-156759

The large version of the clock seen in the second half of the video is available at myminifactory.com/object/3d-print-large-easy-build-clock-with-21-day-runtime-159691 The larger gear size take more energy so the runtime is limited to 21.5 days.

Assembly videos for both clocks should be available soon.

The complete bill of materials to build either clock is:
0.85kg PLA for small clock, 1.2kg PLA for large clock
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

Related videos:
Assembly part 1, basic components youtu.be/gM1UZuv43u4
Assembly part 2, final assembly youtu.be/SawrNzYoE2A
Debug steps youtu.be/uQcfjhecORE

Steve

Which Clock Should You Build?

Steve Peterson 2024-07-22 | A brief description of all my 3D printed clocks to help you decide which one to build.

Clocks Shown:
SP1: Small Wall Clock - mmf.io/o/136608
SP2: Large Wall Clock - mmf.io/o/137009
SP3: Medium Wall Clock - mmf.io/o/142460
SP4: Large EZ Build Clock - mmf.io/o/159691
SP5: 32 Day EZ Build Clock - mmf.io/o/156759
SP6: Silent Desk Clock - mmf.io/o/183452
SP7: Electromagnetic Clock - mmf.io/o/208220
SP8: Coup Perdu Clock - mmf.io/o/253803
SP9: Large Silent Desk Clock - mmf.io/o/275507
SP10: Medium Crazy Gear Desk Clock - mmf.io/o/290349
SP11: Large Crazy Gear Desk Clock - mmf.io/o/290350
SP12: Crazy Gear Wall Clock - mmf.io/o/309948
SP13: Small 8 Day Clock - mmf.io/o/337387
SP14: Large Moon Phase Clock - mmf.io/o/362741

My favorites are all of the clocks from SP10 to SP14. They are the most recent designs with the best features. They will be the easiest to build and the most reliable.

Resources:
MyMiniFactory messaging at any of the clock pages listed above.
Clock Debug Forum: stevesclocks.com/forum
Clock Summary Page: stevesclocks.com/printed-clocks

Contents:
0:00 Intro
0:33 First Wall Clocks
1:57 Silent Desk Clock
2:15 Electromagnetic
2:36 Coup Perdu
3:13 Large Desk Clocks
4:30 New Wall Clocks
5:21 Moon Phase Clock
5:46 Accuracy
6:14 Favorites
6:32 Wrap Up
7:03 Follow Up

3D Printed Clock Debug

Steve Peterson 2024-06-20 | Helpful hints for debugging a 3D printed clock. Download the PDF guide at stevesclocks.com for more information. Skip to the chapters of interest.

Clocks shown:
Moon Phase Clock: myminifactory.com/object/3d-print-362741
Small 8-Day Clock: myminifactory.com/object/3d-print-337387
Other Clocks: myminifactory.com/users/StevePeterson

Resources:
PDF Guide: stevesclocks.com (link is near bottom of page)
Debug Forum: stevesclocks.com/forum (requires signup)

Contents:
0:00 Intro
1:14 Contents
2:42 Printing Parts
3:27 Gear Cleanup
5:20 Dry Fit Parts
7:06 Ratchet
8:20 Frame
10:09 Friction Clutch
12:07 Bearing Test
13:45 End Shake
16:08 Hanging the Clock
20:20 Setting the Beat
21:16 Adjusting Rate
22:49 Additional Checks
23:30 Escapement
24:50 Gear Train
25:45 Pendulum
26:47 Friction Clutch
27:36 Side Profile
29:01 Free Spin Test
30:51 Outro

3D Printed Moon Phase Clock

Steve Peterson 2024-02-28 | 3D printed pendulum clock with a large moon phase dial. This is one of my largest clocks with an accurate moon phase dial located at the front and center. It is as large as possible while still being printable on a Prusa MK3/4, Ender 3, or Bambu Lab P1S/A1. Runtime is 7.8 days with an accuracy of 1-2 minutes per week. The moon phase dial is accurate to within 1 day every 2.6 years.

The STL files are available at the following links:
myminifactory.com/object/3d-print-large-moon-phase-clock-362741
printables.com/model/785631-large-moon-phase-clock

The clock follows the same easy to build design style as my other new clocks. The bill of materials has been reduced and the only machining required is cutting the arbors to length. The pendulum components drop into place without glue. The winding key is easier to build and more stable. Multiple size weight shells are provided to allow filling with either lead shot or BBs.

The clock is 9" wide by 22" tall and 6.5" deep (225mm x 560mm x 165mm). The tip of the pendulum is 30" long (760mm).

The minimum printer size is 210mm by 210mm. Total print time on a Prusa MK3S is around 160 hours using 1.7kg of PLA filament. Newer machines will reduce the print time considerably.

A comprehensive 50 page assembly guide is included with the STL purchase, or you can download it from stevesclocks.com/sp14 if you want to see the steps ahead of time. You can ask questions during your build or share pictures on my debug forum at stevesclocks.com/forum

Contents:
0:00 Intro
0:35 Accuracy
1:20 Gearing
3:55 Gear Details
4:26 Friction Clutches
5:58 Summary

Clock Gear Optimizations for 3D Printing

Steve Peterson 2023-11-25 | A description of the optimizations I make for better 3D printed clock gears.

The first optimization is an extension of a concept called "Fancy Gears" that originated on a now defunct website called "Gary's Wooden Clocks". The premise is that clock gears only rotate in one direction, so only one surface of each gear tooth actually matters. The other surface can be any shape as long as it does not interfere with the other gear teeth. I make optimizations specifically to allow clean 3D printed gears without any unnecessary retractions.

A second optimization was needed to allow for the way the Arachne slicing engine handles inside corners. The resulting gears only take around 60% as much time to print. Optimized gears print in 13 minutes compared to 22 minutes for the original gear.

This is my newest clock with all of these gear optimizations. It is my most reliable weight driven clock.
myminifactory.com/object/3d-print-small-8-day-clock-337387

These clocks have the "Fancy Gear" optimization, which provides the biggest benefit. They were designed before the Arachne slicing engine was available, so they print best using the classic slicing algorithm.
myminifactory.com/object/3d-print-32-day-clock-easy-build-156759
myminifactory.com/object/3d-print-large-easy-build-clock-with-21-day-runtime-159691
myminifactory.com/object/3d-print-medium-pendulum-wall-clock-142460
myminifactory.com/object/3d-print-large-pendulum-wall-clock-137009

Contents:
0:00 Intro
1:24 Original gear
2:18 CAD optimization
3:25 Fancy gear concept
5:42 Optimized gear
6:07 Arachne issues
6:48 Arachne optimization 1
7:34 Arachne optimization 2
8:42 Optimized slicer view
9:49 Summary
11:26 0.6mm nozzle

Friction Clutch Assembly

Steve Peterson 2023-11-13 | A description of the friction clutch used when setting the time in my 3D printed clocks. The model shown is for my small 8-day clock, a similar mechanism is used in all of my clocks.

Useful Links:
Small 8-day clock on MyMiniFactory: myminifactory.com/object/3d-print-small-8-day-clock-337387
Additional information: stevesclocks.com/sp13
Clock overview: youtu.be/ha0zwMUMGpg
Assembly video: youtu.be/ZJJ9jcc7Va4

8-day clock gear assembly

Steve Peterson 2023-11-13 | Assembly details for my small 3D printed 8-day clock. We will walk through adding the gears, testing the pendulum bearings, and running the clock.

This is a completely updated version of my first clock designed to be more reliable and significantly easier to build. The design is available on MyMiniFactory for a very minor fee.

Useful links:
Small 8-day clock on MyMiniFactory: myminifactory.com/object/3d-print-small-8-day-clock-337387
Additional information: stevesclocks.com/sp13
Clock overview: youtu.be/ha0zwMUMGpg
Friction clutch details: youtu.be/WyHAgiHWXsk

Contents:
0:00 Pre-assembly
0:17 Gear 4
0:29 Cross reference
0:46 Gear 3
1:05 Gear 2
1:35 Escapement
2:01 Pallet
2:51 Pendulum arm
4:13 Ratchet
4:24 Gear 8
4:55 Gear 5
5:38 Gear 6
5:47 Front dial
7:10 Test friction clutch
7:41 Hanging the clock
9:01 Pendulum
9:31 Bearing test
11:05 Add weights
12:36 Wrap-up

Small 3D printed 8-day clock

Steve Peterson 2023-11-13 | An updated 3D printed clock with an 8-day runtime. This is a completely updated version of my first clock designed to be more reliable and significantly easier to build. The design is available on MyMiniFactory for a very minor fee. You can download the assembly guide from my website before purchasing the design.

Useful links:
Small 8-day clock on MyMiniFactory: myminifactory.com/object/3d-print-small-8-day-clock-337387
Additional information: stevesclocks.com/sp13
Assembly video: youtu.be/ZJJ9jcc7Va4
Friction clutch details: youtu.be/WyHAgiHWXsk

Contents:
0:00 Overview
1:00 New features
1:56 Pendulum
2:28 Pallet
4:12 Assembly guide
5:21 Close-up

Clocks at Bay Area Maker Faire 2023

Steve Peterson 2023-10-18 | My 3D printed clock exhibit at the Bay Area Maker Faire 2023 on Mare Island October 13-15 and 20-22. I will be sharing both weekends.

Most of the designs can be found on MyMiniFactory at myminifactory.com/users/StevePeterson
or my website at stevesclocks.com

Rev 2 Clock Updates

Steve Peterson 2023-09-04 | Features from my latest clock have been added into five of my older designs.

Three wall clocks added a solid connection between the pallet and pendulum plus adjustable height back standoffs. These edits are recommended to improve the pendulum efficiency. Existing clocks would see improved reliability by re-printing the pallet.

The two easy-build wall clocks have an improved design to prevent gear 3 from pushing against the escapement. These edits extend upon the previous helical gear update and completely isolate gear 3 from the escapement. Existing clocks would be more reliable by re-printing the updated gear 3 and spacer 1.

You can find the updates on MyMiniFactory in the area where you originally downloaded each design. The new parts have "_rev2.stl" suffixes in the file names.
SP1 - Small Pendulum Wall Clock: myminifactory.com/object/3d-print-small-pendulum-wall-clock-136608
SP2 - Large Pendulum Wall Clock: myminifactory.com/object/3d-print-large-pendulum-wall-clock-137009
SP3 - Medium Pendulum wall Clock: myminifactory.com/object/3d-print-medium-pendulum-wall-clock-142460
SP4 - Large Easy Build Clock: myminifactory.com/object/3d-print-large-easy-build-clock-with-21-day-runtime-159691
SP5 - 32 Day Easy Build Clock: myminifactory.com/object/3d-print-32-day-clock-easy-build-156759

You should still have access to the new files as long as you still have the MyMiniFactory account that was used to purchase the original design. The updated files have also been uploaded to a free download area at myminifactory.com/object/3d-print-wall-clock-rev-2-updates-321782

Most of these features came from my newest wall clock at myminifactory.com/object/3d-print-crazy-gear-wall-clock-309948 This is my best and most reliable wall clock so far. I recommend this design if you planning to build your first 3D printed wall clock.

Contents:
0:00 Intro
0:11 Pallet Arms
1:10 Adjustable Standoffs
1:23 Easy Build Updates
2:18 Easy Build Assembly
3:39 Recommendations
4:14 Summary

Designing a 3D Printed Clock

Steve Peterson 2023-07-20 | This video describes the methodology involved in creating the Crazy Gear Wall Clock. This is my largest 3D printed design with great accuracy and runtimes up to 15 days.

The design is available for download at myminifactory.com/object/3d-print-crazy-gear-wall-clock-309948

Contents:
0:00 Introduction
0:30 Resources
2:30 Chapters
3:08 Overview
4:36 2D and 3D models
6:02 Symmetry
6:44 Overall shape
7:55 Hour hand options
8:49 NAWCC calculator
9:59 Runtime options
11:14 Escapement and pallet
13:25 Frame
14:27 Pendulum length
15:30 Closing

Crazy Gear Wall Clock

Steve Peterson 2023-07-10 | This clock merges the best features from my previous clocks into a large wall clock with run times up to 15 days. It is my biggest and most reliable clock.

The design is available at myminifactory.com/object/3d-print-crazy-gear-wall-clock-309948

Features include:

Updated gears based on my Crazy Gear Desk Clocks.
Classic style vertical wall mounted layout.
Highly visible gears and escapement right up front.
Improved pendulum connection with runtimes of 8, 11, or 15 days.
Easy to assemble frame using only a few screws.
Adjustable wall standoffs to reduce frame sag.
Minimal bill of materials using common parts and simple machining (cutting metal arbors to length).

The overall size is about 9.5" wide by 23" tall and 7" deep. The tip of the pendulum is 31". It requires a 205x205 print area, essentially a Prusa MK3, Ender3, or larger. Total print time on a Prusa MK3S is 140 hours using 1.5kg of PLA.

The detailed and most up-to-date assembly guide can be downloaded before purchase from my web site at stevesclocks.com/sp12

Debug forum stevesclocks.com/forum

Crazy Gear Desk Clocks

Steve Peterson 2023-04-26 | These are my new crazy gear desk clocks. The back layer of gears is continuously in motion. The clocks are nearly silent with an accuracy of about one second per month.

The large clock is 14.75" x 15" (375x380mm). The medium clock is 11.75" x 12.75" (300x325mm). Both can be printed on a Prusa Mini or any 3D printer with at least a 175x175mm print area.

Plans to 3D print and build your own are available at:
Medium Clock: myminifactory.com/object/3d-print-290349
Large Clock: myminifactory.com/object/3d-print-290350

The 68 page assembly guide can be downloaded before purchase from stevesclocks.com/sp10

Non-printed parts are all standard components. Most can be found on Amazon or the local hobby store. The electronic control board can use a CNC Shield V4 with modifications or a custom Silent Shield Clock Controller from etsy.com/your/shops/StevesClocks/tools/listings/1464560995

Non-affiliate links:
Quantum PLA: matterhackers.com/store/l/matterhackers-quantum-pla/sk/MS2XWRUN
Reference Clock: amazon.com/Kikkerland-1717-Gear-Clock/dp/B000BD7QT4

Contents:
0:00 Introduction
1:35 Design Evolution
3:06 Old Style Controller
4:15 CNC Shield V4 Controller
5:49 Silent Shield Clock Controller
8:37 Frame Assembly
10:04 Back Row Gears
16:20 Front Row Gears
21:44 Final Assembly and Debug
28:16 Conclusion

Crazy Gear Clock

Steve Peterson 2023-04-14 | I call this my crazy gear clock, printed on a Prusa MK3S. The extra dynamic motion really highlights the dual color MatterHackers Blue Raspberry Quantum PLA. Accuracy is about a second per month.

STL files and assembly notes are available on MyMiniFactory. Two sizes are available.
The large version is at myminifactory.com/object/3d-print-large-crazy-gear-desk-clock-290350
The medium version is at myminifactory.com/object/3d-print-medium-crazy-gear-desk-clock-290349

Improved Clock Driver Circuit

Steve Peterson 2023-01-06 | An updated clock driver circuit for a 3D printed stepper motor driven clock with large exposed gears.

This new design is:
Quieter
More accurate
Uses easy to find parts
Uses common stepper motor
Calibrates automatically

It is an update to the silent stepper motor clock at myminifactory.com/object/3d-print-silent-desk-clock-183452

The new design uses a CNC Shield V4, Arduino Nano, TMC2208 driver, DS3231 precision real time clock, and a standard NEMA17 stepper motor. All components are available from the standard places such as Amazon. The TMC2208 makes the clock run completely silent. The DS3231 RTC has an accuracy of about a minute per year. The remaining parts are 3D printed.

The algorithm and assembly guide can be downloaded from stevesclocks.com/sp6

A discussion forum can be found at stevesclocks.com/forum

The primary components used in this clock driver include:
CNC Shield V4
TMC2208 stepper motor driver
Arduino Nano (Mini USB or USB-C)
DS3231 real time clock
NEMA17 stepper motor
All components can be purchased on Amazon or other sources

Contents:
0:00 Introduction
0:55 CNC Shield V4
2:03 Components
2:14 Wiring
5:24 Size Differences
6:06 Configuration
7:28 Cables
10:49 First Test
12:07 Future Designs
13:26 Summary

Coup Perdu Final Design

Steve Peterson 2022-11-01 | The Coup Perdu clock is finished with many enhancements. The battery was added into the motor compartment and the clock can be either desktop or wall mounted.

Coup Perdu is French for "lost beat" meaning the escapement moves only once during a complete back and forth motion of the pendulum. This allows the second hand to move 60 times per minute with a 1/2 second pendulum length.

The clock rewinds every few minutes using a small N20 motor and two AA batteries. Estimates are a runtime of around 6 months.

The design will be available for download on MyMiniFactory at myminifactory.com/object/3d-print-coup-perdu-clock-253803

The detailed assembly guide can be downloaded from stevesclocks.com/sp8
A discussion forum for build questions or to show off your clock is at stevesclocks.com/forum
Support my design work: patreon.com/user?u=30981480

Components used in this clock (non-affiliate)
Quantum PLA: matterhackers.com/store/l/matterhackers-quantum-pla/sk/MS2XWRUN
N20 Motors: ebay.com/itm/352989894950
Reed Switches: amazon.com/Gebildet-Normally-Magnetic-Induction-Multi-Use/dp/B081JHQ55P

Contents:
0:00 Introduction
0:48 Components
1:31 Wiring
2:00 Options
2:45 Coup Perdu
3:26 Deadbeat
4:14 Rewind
4:32 Setting Time
6:06 Battery Life

Coup Perdu Clock Second Prototype

Steve Peterson 2022-10-18 | Progress update for a 3D printed desk clock with a Coup Perdu escapement.

The first early prototype is shown here youtu.be/9kx7PNscmgY

This update shows the nearly completed clock design. Everything is fully functional. The clock rewinds every few minutes using a small N20 motor and two AA batteries. Estimates are a runtime of around 6 months. There are a few cosmetic issues to clean up before the design can be released on MyMiniFactory. Primarily, the wiring needs to be improved and the batteries hidden in the base.

Coup Perdu is French for "lost beat" meaning the escapement moves only once during a complete back and forth motion of the pendulum. This allows the second hand to move 60 times per minute with a 1/2 second pendulum length.

Components used in this clock (non-affiliate)
Quantum PLA: matterhackers.com/store/l/matterhackers-quantum-pla/sk/MS2XWRUN
N20 Motors: ebay.com/itm/352989894950
Reed Switches: amazon.com/Gebildet-Normally-Magnetic-Induction-Multi-Use/dp/B081JHQ55P

Contents:
0:00 Introduction
0:50 Quantum PLA
1:17 N20 Motor
1:43 Rewind
2:03 Escapement Close Up
2:27 Back View
3:08 Rewind Trigger
3:25 Batteries
3:58 Wrap Up

Coup Perdu 3D Printed Prototype

Steve Peterson 2022-10-03 | Prototype Coup Perdu escapement for a 3D printed desktop clock.

Coup Perdu is French for "lost beat" meaning the escapement rotates one time during a complete back and forth motion of the pendulum. This allows the second hand to move 60 times per minute with a 1/2 second pendulum length.

The design was optimized for 3D printing. The traditional metal pins were replaced with a flat printed escapement. This required the pallet arm with the lever arm to be moved to the other side of the escapement. Everything becomes much thinner and easier to print.

A completed clock using this escapement is in progress.

Contents:
0:00 Intro
0:53 Traditional Design
1:57 Drive Weights
2:40 Closeup
3:32 Super Closeup

Congreve clock prototype - 3D printed

Steve Peterson 2022-08-04 | This is the prototype tray for a 3D printed Congreve style clock. The original design was developed in 1808 by Sir William Congreve. It is notoriously a poor timekeeper due to dust or other disturbances affecting the rate.

This clock uses an Arduino Nano and an RC servo motor to tilt the tray. Adding a real time clock allows it to adjust the rate so the clock should be accurate to within a few seconds per year. It will still be quite noisy, so an enclosure might be needed to muffle the sound.

The complete design should be available soon on MyMiniFactory at myminifactory.com/users/StevePeterson

Subscribe to my channel to receive updates when new designs become available.

Sticky Clock Gear Solution

Steve Peterson 2022-04-22 | Adding helical gears to my 3D printed Easy-Build clocks eliminates the "sticky gear" problem.

The clocks can be found at MyMiniFactory:
Large version: myminifactory.com/object/3d-print-159691
32-day version: myminifactory.com/object/3d-print-156759

The original design allows the escapement to be pinched causing the clock to randomly stop every few days. Two gears were modified with a gentle helical angle to push away from the escapement. Reducing pressure against the escapement gives the clock more energy and reliability.

Thanks go out to Felix for starting a discussion that eventually led to the solution.

A wooden gear version of my stepper motor driven desk clock is introduced at the end of the video. This design may become available in the near future.

Topics:
0:00 Intro
2:23 Problem Description
4:24 Gears in the Clock
5:50 Helical Gears
6:41 Adding New Gears
7:35 Fixed Clock
9:48 Future Developments
10:28 Wooden Desk Clock

Electromagnetic Pendulum Clock

Steve Peterson 2021-12-16 | 3D printed electromagnetic pendulum clock.

The electronics come from a cheap pendulum drive module purchased for under US$4. It should run for at least 6 months on two AA batteries. Everything was 3D printed on a Prusa MK3S.

The overall size is around 11" (280mm) wide and 14" (355mm) tall. It requires a printer with at least a 225x195mm or 210x210mm print area.

The design is getting prepared to be uploaded to MyMiniFactory. Check out some of my other designs at myminifactory.com/users/StevePeterson or my web site at stevesclocks.com

Some of the inspiration comes from the pendulum drive mechanisms in Clayton Boyer's Toucan clock, HolzMechanik's Magica clock, and Dick Bipes electromagnetic pendulum clock. This clock has a ticking second hand. The electronics in this clock are significantly simpler since they are pulled from a standard pendulum drive module. There are no custom coils to wind. The only soldering required is to extend the battery terminals to span two AA batteries.

The gear train is loosely based on my stepper motor desk clock at myminifactory.com/object/3d-print-silent-desk-clock-183452 The pendulum is sized so the second hand has a natural 60 ticks per minute. Accuracy should be tunable to around a minute per week.

Steve

3D Printed Desk Clock with Silent Drive

Steve Peterson 2021-08-31 | 3D printed desk clock with silent stepper motor drive

This is a 3D printed clock using an Arduino Nano and a custom motor control circuit to drive a stepper motor. The motor control circuit allows 64 position micro-stepping to drive the sweep second hand with a smooth and nearly silent action.

The STL files are available at MyMiniFactory at myminifactory.com/object/3d-print-183452

The custom motor controller is available on Etsy at etsy.com/listing/1063320628

06-Jan-23 Update: I made a new quieter motor controller and uploaded new files to MyMiniFactory. If you purchased the old design, you have access to the updated files. This new controller uses easy to find parts and adds a precision real time clock with an accuracy of around a minute per year. Details are at youtube.com/watch?v=PR4PXR7RXEY and on my web site at stevesclocks.com/sp6

Contents:
0:00 Overview
1:41 Driver circuit
2:35 Early prototype
3:32 Micro stepping
4:38 Full stepping comparison
5:40 Conclusion

EZ Build Clock Debug Process

Steve Peterson 2021-03-24 | Final assembly and debug process for the 3D printed Easy Build Clock available at MyMiniFactory. This video focuses on the debugging individual components to get the clock working properly.

There are two versions of the clock.
The largest clock at myminifactory.com/object/3d-print-159691 can be configured with runtimes up to 21 days
The smaller version at myminifactory.com/object/3d-print-156759 can be configured with runtimes up to 32 days

Topics:
0:00 Intro
0:16 Hanging the clock
1:19 Debug start
1:53 Pendulum swing test
5:28 Gear train test
9:55 Setting the beat
13:46 Adding extra weight
17:23 Closing comments

Related videos:
Clock overview youtu.be/djp73Q6tXZA
Assembly part 1, basic components youtu.be/gM1UZuv43u4
Assembly part 2, adding gears youtu.be/SawrNzYoE2A

EZ Build Clock Assembly Part2 Adding the Gears

Steve Peterson 2021-03-24 | Assembly instructions for the 3D printed Easy Build Clock available at MyMiniFactory. This video focuses on adding the gears and finalizing the assembly.

There are two versions of the clock.
The largest clock at myminifactory.com/object/3d-print-159691 can be configured with runtimes up to 21 days
The smaller version at myminifactory.com/object/3d-print-156759 can be configured with runtimes up to 32 days

The assembly process has been simplified as much as possible using only a small number of non-printed parts.

Topics:
0:00 Intro
0:29 Check fit
1:51 Gear 4 minute hand arbor
2:21 Gear 7 ratchet
3:11 Gear 9
3:40 Gear 8 winding drum
4:38 Gear 3
5:11 Gear 2
6:09 Gear 5
6:38 Gear 1 escapement
7:23 Gear 0 pallet
8:47 Gear 6
9:04 Front frame
10:35 Side view
11:39 Hands
12:12 Closing comments

Related videos:
Clock overview youtu.be/djp73Q6tXZA
Assembly part 1, basic components youtu.be/gM1UZuv43u4
Debug steps youtu.be/uQcfjhecORE

EZ Build Clock Assembly Part1 Components

Steve Peterson 2021-03-24 | Assembly instructions for the 3D printed Easy Build Clock available at MyMiniFactory. This video focuses on the component pre-assembly steps.

There are two versions of the clock.
The largest clock at myminifactory.com/object/3d-print-159691 can be configured with runtimes up to 21 days
The smaller version at myminifactory.com/object/3d-print-156759 can be configured with runtimes up to 32 days

The assembly process has been simplified as much as possible using only a small number of non-printed parts.

Topics:
0:00 Intro
1:12 Frame assembly
4:00 Winding drum
5:40 Ratchet
8:58 Minute hand
14:07 Shaft collars
15:54 Pendulum
19:28 Weight shell
23:49 Closing

Related videos:
Clock overview youtu.be/djp73Q6tXZA
Assembly part 2, adding gears youtu.be/SawrNzYoE2A
Debug steps youtu.be/uQcfjhecORE

3D Printed Clock Arbor Test

Steve Peterson 2020-12-16 | Quick experiment to compare friction of various arbor types used in my 3D printed clocks.

The options include:
1. Stainless steel bushings with 1/16" music wire arbors
2. Small printed holes with 1/16" music wire arbors
3. Large printed holes with 1/8" music wire arbors

Stainless steel bushings are used in my first clock at myminifactory.com/object/3d-print-136608 They have low friction, but are a lot of additional effort.

The small printed holes turned out to have nearly the same friction as the stainless steel bushings without the additional machining. They are used in my other clocks at myminifactory.com/object/3d-print-137009 and myminifactory.com/object/3d-print-142460

Large diameter printed holes had larger friction, as expected. They might still be used in a few places where extra strength is required and the additional friction is allowable.

Pendulum Wall Clock Assembly Part2

Steve Peterson 2020-10-08 | 3D printed pendulum clock assembly part 2 of 2
This video shows the assembly of the clock posted to myminifactory.com/object/3d-print-137009

All the parts can be printed on a Prusa MK3S or Creality Ender 3. It has a 4.5 day runtime and an accuracy of 1-2 minutes per week.

Topics:
0:00 Intro
0:30 Pallet
3:41 Bearing test
5:47 Weight shell
10:30 Adding gears
16:00 Final assembly
19:17 Testing the clock

Related videos:
Clock overview youtu.be/kn1OaGAae5w
Assembly part 1 youtu.be/NduVa_3wJFY

Steve

Pendulum Wall Clock Assembly Part1

Steve Peterson 2020-10-08 | 3D printed pendulum clock assembly part 1 of 2
This video shows the assembly of the clock posted to myminifactory.com/object/3d-print-137009

All the parts can be printed on a Prusa MK3S or Creality Ender 3. It has a 4.5 day runtime and an accuracy of 1-2 minutes per week.

Topics:
0:00 Start
0:23 Back frame
5:39 Front frame
8:44 Winding drum
11:44 Ratchet
14:59 Minute hand
18:05 Pendulum shaft
19:48 Pendulum bob

Related videos:
Clock overview youtu.be/kn1OaGAae5w
Assembly part 2 youtu.be/IOmcpzH5iek

Steve

My Latest 3D Printed Clock Designs

Steve Peterson 2020-10-03 | The main clock shown here is the 3D printed pendulum clock available for download at myminifactory.com/object/3d-print-137009

It is a weight driven pendulum clock with a 4.5 day runtime and an accuracy of 1-2 minutes per week. It has a deadbeat escapement with large exposed gears. Total print time is around 150 hours using 1.3kg of filament. It can be printed on a Prusa MK3S or Ender3 printer. Nearly every component has been optimized for 3D printing.

Related videos:
Assembly part 1 youtu.be/NduVa_3wJFY
Assembly part 2 youtu.be/IOmcpzH5iek

A 75% scale version of this clock to be printed on a Prusa Mini or similar size printer is at myminifactory.com/object/3d-print-medium-pendulum-wall-clock-142460

Other clocks shown that may be released in the future include:
Large wooden gear clock
Stepper motor driven desk clock family

Steve

3D printed clock

Steve Peterson 2019-02-10 | 3D printed pendulum clock with an 8-day run time and an accuracy of 1-2 minutes per week. Printed in PLA on a Prusa MK3.

The latest design edits are at myminifactory.com/object/3d-print-small-pendulum-wall-clock-136608 including a complete assembly manual with instructions and the list of materials. An assembly video for a similar clock is at youtu.be/NduVa_3wJFY There are only a few minor differences that can be found in the assembly manual.

Newer designs with simpler construction can be found at myminifactory.com/users/StevePeterson Most are premium designs available for a very nominal charge.