Big Rook Container

This is a mod of Ryan Mark's Big Rook. I added some screw threads so it can be separated and used as a container. Maybe put a light in it? Shown here is a 6 inch HALO4 Master Chief for scale. The Rook is Printed out at half size. I've also tried it at 1/3 size. If you print it full size with 100% solid it is going to use a kilo of filament. For the threads I'm using a modified version of the OpenScad code developed by NielsJL in the Tinkercad communuty. https://tinkercad.com/things/9SSHITeKzx2
I did this in [roject about half Tinkercad and half Blender. I always work in Tinkercad but on this project it had a hard time importing the original rook files correctly. It also had trouble with doing boolean adds with the screw threads. I had to use Microsoft's Netfabb service to do some mesh repair and Blender to do some of the boolean operations.
Here's the Tinkercad file:
https://tinkercad.com/things/fvBYfCA5d6v