Reddit reviews One Square 3" Inch Lazy Susan Turntable Bearing - 5/16" Thick & 200 LB Capacity
We found 4 Reddit comments about One Square 3" Inch Lazy Susan Turntable Bearing - 5/16" Thick & 200 LB Capacity. Here are the top ones, ranked by their Reddit score.
5/16" pressed steel mounting plates for strength and durabilityZinc-plated for resistance to corrosion1/4" ball bearings for efficient operation and stabilityMaximum load capacity 200 lbs
I used this.
One Square 3" Inch Lazy Susan Turntable Bearing - 5/16" Thick & 200 LB Capacity https://www.amazon.com/dp/B00ZSQSWTM/ref=cm_sw_r_cp_apa_i_dziuDbB1ZASZ4
From amazon
Slightly jerky movement is ok, as long as the final positioning is correct and increments slowly. Say I take 1 full step per photo, and a photo every 10 minutes. With .067deg/step motor+gearbox, it would go about 10 degrees per day total, which is probably fine since it's roughly 300 degrees per month, so if it happened to be a 3 month video, it would go about 2.5 full rotations.
For stiction, you are referring to the stiction of the interface between whatever is being rotated and the base? I have used a stepper before, but it moved much faster and probably had more torque as a result, and used this 'lazy susan'-type turntable device. Hopefully that would be sufficient for this project, and there wouldn't be any step 'skipping'.
(edit: oh unless you mean internal stiction of the gearbox, in which case... I don't know what to do about that.)
I could sync the shutter and movement, but the movement would take little time and the photo is quick (say 1/60 second), so it would be unlikely that the two would trigger simultaneously, although it would be a possibility.
tl;dr for your final question:
Photos every 10 or 20 minutes, rotation on the order of 1-2 rotations a month, leaving some room to fine-tune the rotation rate.
Maker Beam starter kit - $112.50 - https://www.amazon.com/MakerBeam-Regular-anodized-including-brackets/dp/B00G3J6GDM
Riuxin Pro knife sharpener kit - $29.95 - https://www.amazon.com/Sharpener-Professional-Sharpening-Fix-angle-III/dp/B015XKSNS2
3" Lazy Susan bearing - $5.95 - https://www.amazon.com/Square-Inch-Susan-Turntable-Bearing/dp/B00ZSQSWTM
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empty blanks for jig (these are meant to be used as a base for stones, but I just used a glass plate and various grits to flatten them to attach my psa lapping film to) - $28.50/pack of 10 - https://www.amazon.com/Gritomatic-Empty-Blank-for-Stone/dp/B01N0ZINXE
lapping film (I bought 1 sheet of every grit this vendor offers, but I've seen better prices elsewhere) - $5/sheet - https://www.amazon.com/Micron-Lapping-Microfinishing-Aluminum-266Xx1/dp/B071R3S6GS