Robust Teaching Clock
by BrayChristopher
Printable files (9)
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stlArm.STL
101 Ko · 426 downloads
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stlDrive_Shaft.STL
148 Ko · 410 downloads
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stl8_Tooth_Gear_-_Fatter_-_Top.STL
286 Ko · 417 downloads
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stl8_Tooth_Gear_-_Fatter_-_Bottom.STL
300 Ko · 417 downloads
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stlMinute_Hand.STL
169 Ko · 427 downloads
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stl12_Tooth_Gear.STL
361 Ko · 425 downloads
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stlHour_Hand.STL
222 Ko · 408 downloads
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stlNew_Clock_Face.STL
1.4 Mo · 412 downloads
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stlBase_Housing.STL
662 Ko · 411 downloads
Description
New Version: https://www.thingiverse.com/thing:3037481
I liked the concept of these other teaching clocks, but the parts were too small and weak. I kept breaking them while trying to assemble them.
Everything is held together with #6 flat head sheet metal screws.
5x 1/2" long
1x 1.25" long
When assembling make sure that the gear in the base housing has one tooth pointing up (at 12) and two teeth pointing down (at 6). Then attach the arm and both hands pointing up (at 12).
Things that still need improving:
There is a lot of play in the gears. I might try fattening up the 8 tooth gears more and see what happens.
The drive shaft is too wobbly.
The arm (and minute hand) are not balanced, so they don't stay put when you hold the clock up.