Simple remix, cut walls down to 2 extrusions (2 shells), 0.96 mm width. Reduces plastic weight in half to 50ish grams each print. Took 2.5 hrs for the large one with 0/0 top/bottom layers and 15% infill fast honeycomb at 0.28 mm layer height.

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https://ko-fi.com/schleprocker

Also on printables

https://www.printables.com/social/258712-schleprocker/models