First of all: all the credits for this beautiful model goes to ET-Huang (https://www.thingiverse.com/thing:144668) and Julien_DaCosta (https://www.thingiverse.com/thing:2493386, who remixed it for no overhang).
In a attempt to increase my skills in Meshmixer and 3d-Builder* I remixed the statue of ET-Huang / Julian DaCosta to a piggy bank. I created the used fill-opening with screw-cap some time ago .(https://www.thingiverse.com/thing:3383689).
The model is 200 mm high. The wall thickness is 3 mm, except for the bottom where it is 18 mm to make it flat with the fill opening. The vertical opening at the top is 35x3.5 mm.
Published it earlier on Thingiverse, you can find some beautiful makes there: https://www.thingiverse.com/thing:3952978
Happy saving :)
*Although I was able to create this thing in both programs, the result of the Hollow-function in Meshmixer was a lot better. On the other hand i had to repair that stl in 3d-builder before it successfully sliced (slic3r). 3d Builder turns out to be a very good STL-repair-tool.