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Am still printing the clock but once going will also want to "electrify" the winding.

Am thinking about using a stepper motor using an arduino circuit. (Generally already have the basics with one of Steve's earlier clocks).

Am thinking about running it at say 2 rpm starting every x minutes.

What do you guys think:

1. Will a stepper motor have enough torque to start turning the conveying screw if the screw is full of metal balls

2. How feasible would it be to have the thing run on say 4 x 18650 Lion batteries??

I have started printing this, all going well. I had to print the base as split pieces, as when I tried it as one piece it would not print for me, got 8 hours into the print and stopped.

I printed it in two pieces not sure how to join them. What are the two tags on each piece.

Do I glue them together?

Thanks in advance.

I finished clock 16, the easy clock. It worked well for a week. Then I disturbed it while changing to the printed weights.

I haven't been able to get it to run since.

I've dismanteled it down to the bearing about a dozen times. Every gear, spacer, bearing -- they all seem to spin freely on the arbors. THey are lined-up. I've tested every combination for easy spinning -- with and without various parts. If I remove the pallet gear the entire gear train spins like butter. But when I put it together, it locks up. I verified the frame-gear spacing.

That said, the six-week process has been a lot of fun. I went from zero knowledge and a borrowed old Creality printer to producing accurate prints. I admire the instructions -- so well done. I've had plenty time to admire the subtle engineering design decisionssthat align the gears. Even …

Just starting the Rolling Ball Clock. Couple of questions:

1. Purchased the build kit from Etsy. Will it have the proper arbor lengths to use the new clock face in the revised files?

2. The pin holes in the spiral auger are too tight for the pins. Using the 1/8" drill bit to widen them as suggested allows the pins to slide in but be a bit "loose". Once assembled will this looseness be an issue?

I finished the SP 16 compact clock and it runs but I cannot get it to keep time. I am almost sure the friction clutch is slipping. I have a Timetrax clock timer and I have the pendulum adjusted for 4800 BPH per Steve's notes. The timekeeping is erratic.. sometimes it will stay on the the correct time for several hours then the next time I look it will be a few to several minutes slow. I had originally used 1/16" music wire for the clutch and thinking it was too small I bought 1.6mm music wire and tried that but the clock still has erratic timekeeping (always slow). I am thinking about re printing gear four (which is the clutch) or maybe using larger diameter music wire in gear 4. Has anyone had the same problem? or have any suggestions?

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Made little better video, start of railroad clock, one RPM gear motor in motion.