Threaded Dragon Egg, Great for Easter and Gifts

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If you find this model useful, feel free to buy me a coffee. 

Also check out my standard threaded egg, locking egg with key, extra large dragon egg, and solid dragon egg.

It's a threaded dragon egg, great for Easter egg hunts, gifts, and Game of Thrones fans.

The whole egg measures 63mm tall by 45mm wide (47mm if you count the scale width). This will scale fine up to 200 percent. If you want to print bigger than that, switch to the 300 percent version.

This is a remix of my own threaded Easter egg. I made every bit of this from scratch, including the scales. I made the scales by importing a custom texture into a Blender brush and placing every scale one at a time, adjusting the size as I went. I designed it with Sketchup, Blender, and Meshmixer. (And Gimp for the scale alpha.)

If you find this design useful, I would love it if you could post your make. And tips are always appreciated but never expected. Any money earned will go toward making new designs.

You may sells PRINTS of this design, but you MAY NOT sell the digital files or share them on any repository. If you want to see them on a particular repository, message me, and I will add them myself. When you sell prints, please respect the Creative Commons - Attribution - Share Alike license and credit me on the sales page with a link to this page. Attribution is mandatory. 

Instructions:

1. Print the bottom and top pieces as oriented in the files. Supports are not required. I recommend a layer height of 0.2mm or smaller, wall thickness of 1.2mm, a bottom thickness of 0.6mm, and a top thickness of 0.8mm. Infill density of 12 percent or higher. I tried to allow for horizontal expansion in the design, so try printing first WITHOUT adjusting XY Compensation (PrusaSlicer) or Horizontal Expansion (most other slicers). If it prints too tight or too loose, then you can use one of those slicing features to compensate. Threads are notorious for being the hardest item to print, so please be patient. If you want to save time while testing, you can print the included calibration test instead of the full model. 

 2. Once printed, screw the threads in and out repeatedly to remove any stray particles. It may feel too tight on the first threading but should screw easily after ten seconds of doing this.  

3. Note the small nubs near the threads. Refer to the pictures to see what I'm talking about.  When the two nubs are parallel, you know you've got the proper alignment. If the nubs don't line up, tinker with XY Compensation (PrusaSlicer) or Horizontal Expansion (most other slicers) to get a better fit. If you adjust it in small increments (try 0.05mm at a time), it will just slightly make the threads tighter or looser, which will result in the egg parts aligning better. 

Added some new pictures.