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Thanks iomaa for the design, I've always wanted my own coin vortex since I was a kid. They were common as a type of charity box (maybe still are).

I scaled it up to 160% and printed it on my CR-10. It gives a diameter of 266.5mm and I had no problems with the base, funnel and two ramps. I didn't print out the extensions or stopper.

I don't know if you have time to create and publish other versions but it would be great if you could! There are a couple of minor issues with the unified scaled up version, the ramps while they work are oversized. And the funnel while again working is a little too tall. The final 1/3 is too narrow and so the coin path ends very quickly. Will post a "made" and some photos soon. Thanks again!