New try with the pictures. I don't know what happened with the links.
Now the original post also includes example of the model. Unfortunately I am not able to upload the actual model because it is not my own model.
The attached example of of the model is quite low poly but I in the final model I would need to make the model high poly in order to have nice and smooth 3D printed object.
I also updated my profile a little. I am still using 2017 Sketchup Make.