This was originally made for my Sirayatech Roamr video. 

It works fine with just PLA though, even though it's way better with the foam internals. 

To print with either, load the shell and shell-lid in together and when asked, yes it's made of multiple parts, and set the foam to foam if you're doing that. 

No need to use material interlocking, it sticks fine without. 

clips work but could be better, if anyone wants to take time to improve them feel free! 

(due to snapping clips don't use brittle filament, like silk, it will just snap them off! )

Enjoy!