So the next step of the design process after finalizing your sketch after lots of upgradations.
The next step is to make a rough quick prototype to see that what can be the consequences and what type of problem we can face during the process of the final model so that we can work on it priorly. The rough prototype also gives us a chance to explore different materials. As I chose 3 grips from the sketches that were rotating a bulb, pulling the pin of the fire extinguisher, and sliding a window. I made prototypes of three of them, so the problems I faced were that in the 3rd model I should have used wood instead of file card so that it could be more rigid and beautiful. Nextly to find a proper material for the bulb grip, it was hard to find a hard transparent material to use because we were not allowed to use glass. Also, the cotton was ruining the meaning of that grip. Thirdly, in the third grip, the frame was not rigid, and flames were not looking like flames due to the material. So these are some of the things that I have to think about before starting my final model.
virtually true 