Extra Large Dragon Egg with Threads - (300 percent scaled version)

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After much trial and error, I present my threaded dragon egg at 300 percent scale. This was way more involved than simply enlarging it in the slicer. I went through SEVERAL iterations to get it right.

At 300 percent, the egg is 132mm (5.2") wide by 190mm (7.5") tall.

Here are the alterations:

* Adjusted Seam, so the nubs align and the fit is not too loose and not too tight.
* Thinner walls so it uses less plastic.
* Adjusted thread tolerances for a better fit.
* Modified threads – the original threads at this larger size would have caused overhangs
* Modified inner dome in the top piece - the original dome at this larger size would have required supports.

Directions:

I recommend a layer height of 0.2mm or smaller, walls at