About this 3D model

My 172M seats 4 smokers comfortably. Unfortunately for smokers you can't light up in my plane. This is a simple design to replace the ashtrays in the front of a Cessna 172M. I used to jam pencils and pens into the ashtrays but they are forever falling out. A very simple solution to lost pencils and wasted space. I am still learning about 3D design and modeling so I lifted wolfboys excellent palamino pencil holder design.