Galileo's Pendulum Clock

by ZombieCat Sep 29, 2012
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Do you think this could be done with 1/8th inch steel sheet?

This is one of my first designs (6 years old!) so if I were to invest in redoing it in steel I would probably make the following changes:

  1. Fix the gears - There are two fixes I'd recommend. First I'd design the gearing to correspond in some logical way to the pendulum swing. Gear it so that it ticks approx 60 around and 1 per second. Second I'd probably use a software for gears (I did mine by hand tracing).. I've heard good things about this software https://woodgears.ca/gear/
  2. Make room for ball bearings - I'd build space for ball bearings into the case.

You'd probably have to redesign it significantly for steel but it would be a cool project!

I think it will be a great project for when i get back to school. I'll keep your ideas in mind when redesigning it, I've never experimented with gears so it will be fun.

Nice piece to study onto... I don't have a CNC so I prepared several .STL for those who want try to print in PLA.
If anyone interested to:
https://tinkercad.com/things/eSEenWzJ376 (complete plan, doesn't fit in 3d printer)
https://tinkercad.com/things/bRw4R6C4r52 (part 1, fits well)
https://tinkercad.com/things/bhoVgXsKGsq (part 2)
https://tinkercad.com/things/6FSN7o4EMoZ (part 3)
https://tinkercad.com/things/8ttx6dwPt1L (part 4)
https://tinkercad.com/things/1Z7sYFauSjK (part 5)
https://tinkercad.com/things/iUkZt8TGpne (part 6)
HTH someone, and now I'll begin to print it!

Hello, most of the links to tinkercad are broken; would you please re-up the complete plan. Thank you very much

Cant wait to try this!! Thanks!!

Christiaan Huyghens invented the pendulum clock (Horologium Oscillatorium, 1658), not Galileu-Galilei.

Stay away from this project. It lacks hour needle and many other parts. Holes and dimensions in general are quite poor and no explanation about how it can work. There is a complete Galileo machine in Thingiverse but in a strange format. Oh well...

CamBam (registered version) is pretty good for gear design. It's one of the best cheap CAD/CAM programs for CNC mills (CAM for milling is tricky and needs more than a simple drawing program).
It's also quite a useful CAD program generally, with DXF export. Goes into Corel Draw OK for laser cutting.

What software did you use? I'm having trouble finding good software that will handle gears.

I used Inkscape to make the gears. I did need to go in and clean up the vectors though for the smaller gears... Wood gears are always challenging.

The wood I now swear by is 1/4" Purebond from Home Depot that I purchase in 4x8 sheets and cut down to my laser cutter. I have a 50W Epilog and cut it at 12/95/1300 and I get a nice amber cut with no burn residue on the edges (clean hands!) http://www.homedepot.com/p/1-4-in-x-4-ft-x-8-ft-PureBond-Birch-FSC-332164/202847918#.UZpNditBJQMhttp://www.homedepot.com/p/1-4...

Small gear doesn't look that good up close. Just tried this http://woodgears.ca/gear/index.htmlhttp://woodgears.ca/gear/index... seems good.
theres a workaround on youtube how to get rid of the wobly thing in the program.

What software did you use? I'm having trouble finding decent software that does gears.

I love this project but cannot get the dxf to open... anyone else have this problem?

We are students of Politecnico in Milan and we are writing you to ask you some informations about Galileo Pendulum's because we are doing a project for PLM course; so can you give us the shares and measures of each part of the pendulum?  

Thank You  for your attention.

I've uploaded more pictures that should help. If you'd prefer any other file formats I can try uploading those as well.

Great project. Ive cut all the pieces but like the others Im not quite sure how to put it together. Do the cogs on the escapement wheel stick out both sides? There appears to be a pawl on either side of this wheel. A video of the movement would be useful. Ive made a Pro Desktop version to check movements if anyone is interested in having it.

I'll upload some more pictures of the completed build and try to post instructions this weekend.  Thanks for your patience

I just cut out all the pieces! But I have no idea how to put all the pieces together. ZombieCat, can you help me? Can anyone help?

Sajna a CDR.file tényleg üres! 

This is awesome, I got the dwg file and I plan on laser cutting it soon. Can you provide more detailed assembly instructions? It would help along with the picture of the drawing you posted. I imagine other than the laser cut parts you would need some strings and some kind of weights. Thanks so much very cool clock, cant wait to build. 

 Great achievement, but I can not open the file. Cdr

I've uploaded a PDF and dxf version... let me know how if they work.

YES.......... that's ok
I'll try to cut out in colored PMMA 3mm
Soon for the test