I used the same 3D model from the laser cutter and simply saved it as a different file type to send to the printer. I didn't personally send it to the NVBots, I sent it to the CMU helpline, and had them print it on the Stratasys.

I printed it in two pieces because I wasn't able to print the full-scale object all at once.

The pieces printed very neatly, and I used hot glue to secure them together.

I tied a loop into one end and secured the ball to the cord on the other end through the same type of loop. The 3D print was clearly of a high quality, and therefore it felt good and comfortable in my hand.

There was still a lot of adjusting I had to do with the cord, but the print came out nice enough that I didn't have to reprint anything.