Some friends were doing an Alien themed party and wanted to use https://www.thingiverse.com/thing:1057666, but I didn't want to print it all as one. I also like flipping these kinds of models on their back to keep support gunk hidden.
So I was able to use meshmixer to split the base and the alien, then used the old netfabb basic to repair the model. It is not the best split but it worked for my purpose.
Accidentally broke a finger, but it's fine, it builds character!