Tool to move the crutches

grabcad

Hi all. after thinking about 2 hours and having another 6 hours before the challenge end, I come up with this design. I think it is very hard to create a gimbals that could stabilize the food tray and the cup at the same time the user is moving. IMO holding the food and drinks with hand is the best solution to prevent spill. The problem now is how to move the crutches when holding. What I did in this challenge is creating an anchor to the arm so that the arm can move the crutches forward by heaving up while holding the food and drinks. I made only the right hand side as the left side can be mirrored using the right side part (please use the solidwork file, it is a little bit messy inside, but pardon me, a little time to clear the mess). The part haven't been hollowed and strengthen. If this design can win I will provide the high strength light version of it along with the analysis. Apart from that this is 3d printable but I have not print it yet. The screw used in this design are as follows; 1X M5.0X0.80X20 and12X M4.5X0.75X20. You need to tap the hole first using the appropriate tapping tool. Use only ABS for printing. If you have any concern, please comment at the bottom of this page. Thank you very much.