Christmas in JULY!
This model is inspired by RJ Design. I've been learning Fusion 360 and this was a fun challenge. Looks great as a green ‘tree’ and white ‘snow’ exterior. Getting the tolerance right took a lot of attempts but I think I got it right; after a few slides it should work smoothly with a satisfying zip through.
The included print profile is for sequential 2 colour printing on a single plate. It's the largest possible allowing for the 90 mm ‘clearance to lid’ limitation. There's also a 150mm version with each colour on a separate plate.
These types of models have had some silly copyright complaints. This model is just a helix or spiral or screw thread. You can't copyright a helix. DNA is a helix! This model is NOT a remix or derivative of any other creator's digital file. I made this from scratch in Fusion 360:
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.