What a mindblowing mechanism, thanks for sharing
Because I had no M3x45 screws, I remodeled half of the inner brackets to contain 4 treaded inserts each (should also be possible with bare screws) so I can use 6 M3x30 and 6 M3x10
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@vhateg_1818367 just posted it as remix
(voron inserts with OD 5mm are too big for the slim walls)
@Franz Whoops, I forgot to reply. I printed your remix the next day after you shared and it worked flawlessly.
it should be possible to make this kind of rack without any gears. I am not fluent enough in CAD, but please feel free to get an inspiration from my draft.
All rods are identical, with the teeth on two sides. With the except for the "teeth", which are on 45 degree, all angles are 90 degree.
There are 6 places where the rods interact, on the 6 corners of the cube. Each rod interacts only with two other ones.
It should probably be possible to make this construction hold its shape by adding an additional bar to each rod, and placing everything closer together. But, I think that those additional bars should have no teeth, otherwise we would be back at the issue that you have described in your video. (edited)
@Morgan_1763963 Interesting design! It looks like you get the sticks moving in all six directions, although the symmetry of the design is different. There's a special direction in which you can see a hexagon.
Hi Ho from the mathologer video. Thanks for your existence and hard work.
Printed at 50% size, still working on assembly but fun project so far!
Awesome model as always, thanks. Already started modding (pic) to get a linear actuator, like an antenna extender kind of thing.
Runs silky smooth.I glued on some stoppers so it does not fall apart all the time when fiddling with it.
Looking at it in the 3D viewer makes my head hurt, I love it.
Great story telling. I am sold! Looking forward to print. Thanks for sharing.
Printed without support with the "3" side down but I recommend print it with supports under the arch
Nice model
Sanded each gear end down a technical smidge to reduce end friction. I'm curious what impact Duane Degn's two short end axles for each gear had on engagement, stability and durability given that this will be an educational gift for a child.
Also, the instructions would benefit from being revised to note that the two core halves have two possible orientations of which only one is correct. Doh! (edited)
I scaled the center core to 102%. I used short M3 screws on each end of each gear. The threads engage with the core but not the gears.
Make sure all support is cleaned off the gears.
