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That's interesting, about lifting the model.

I printed one in 1.5x scale, I got one of the smaller gears connected (slightly, on one side) to the outer gear. It was a fair amount of effort to get it loose. I suspect a small rotation or perhaps shift would make it print better?

Top and bottom weren't great either, but with those gaps oversized by my scaling it's not exactly surprising.

I found the 'missing' pieces in the sub-directory, so I'll try printing the no supports version and assembling after. The one I made is pretty awesome as it continues to break in. :-)

Small supports are reasonable to draw in as used to separate springs here: https://www.thingiverse.com/download:6013837