After this first part, I decided to 3D model part of the car, including a version of the radio box you can see in the photo. This took a lot of time and was a failure, as I have neither a plan nor a model to copy.
and during a discussion on a French forum with our friend @Silvertriple, he offered to help me with the radio box. In reality, he went much further than that, because as you'll see later, he was brilliant, and if this project was able to go ahead, it's only thanks to him, and I'd like to thank him again.
After he's drawn the radio box, he shares the file with me and I 3D print a piece of the box to check that it's been perfectly in place from the start. We were then able to print the whole box and start assembly.
My bad box 3D
The half test box of Silvertriple