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Help: Splitting shelled model into parts for 3D printing with clean edges

I have a design that has been shelled, and I now want to divide into pieces for 3Dprinting.

I’ve split the design into polygroups for the pieces, and then split the polgroups into separate subtools (so a subtool for each piece).

Screen Shot 2018-01-29 at 17.57.26.png

Now I want to seal the edges, with a nice flat surfaces that can easily be glued once printed, but thats where I’ve run into a problem.

Whether I use close hole / dynamesh, it doesnt seal off the edges nicely.

Images below show one piece with open edges, and then ‘fill hole’ or ‘dynamesh’ performed, but neither closes the edges nicely.

Screen Shot 2018-01-29 at 17.58.30.jpgScreen Shot 2018-01-29 at 17.58.54.jpgScreen Shot 2018-01-29 at 17.59.05.jpgScreen Shot 2018-01-29 at 17.59.13.jpgScreen Shot 2018-01-29 at 17.59.26.jpg

Is there a way I can do this?

I have tried also using the clip and trim function aswell, but it also created bad edges and sealed over the shelled aspect of the model -

Screen Shot 2018-01-29 at 18.02.01.png

I’m also open to using another software for splitting if someone has a suggestion.

Attachments

Screen Shot 2018-01-29 at 17.58.30.jpg

Screen Shot 2018-01-29 at 17.58.54.jpg

Screen Shot 2018-01-29 at 17.59.05.jpg

Screen Shot 2018-01-29 at 17.59.13.jpg

Screen Shot 2018-01-29 at 17.59.26.jpg

I resolved this by using the free software ‘netfabb’ for slicing the model (windows only, doesnt run on mac)