caliper size on the cover photo is 78.5 mm
Someone posted on reddit asking how a helix screw toy was made but did not have a link to the STL so i reverse engineered it and made my own version.
I added the full parametric fusion 360 source file in case someone needed to know how i made it
just a FYI if you want to scale it down. the PiP model has really low clearance so you might need to split it into objects and scale them individually to get a little more breathing room.
50% scale seems to be the best size to fidget with but i really cant get the PiP model to work with that size so you will need to print the pieces individually. if any one can make a remix with it working that would be awesome!
The author marked this model as their own original creation.