Help With A 3D Model Of The Omnibot 2000 Arm?

Hello all! I think a 3d model of a Omnibot 2000 arm a lot of people wouldn't mind having. Specifically I am interested in a longer extended version of the upper arm by 50 percent and same for the lower arm. I have never done 3d printing so that's why I am asking for help. Visually the arms Jarvis has now are pretty bit not that functional due to the lack of a wrist and short arm length. To grab a can from the refrigerator it would need to be on the very edge and just the right height. With a longer version of the arm it would be much more functional.