I've been designing and modeling my own 3D meshes in Blender for a while now and I keep running into this issue. In Blender, I always set the models origin point or anchor point, wherever the model has a hinge type of object or at the center of an object that spins or rotates.
I've noticed that when I import a model into HF3P, as a .obj file, the origin point "anchor point" always resets to the default center of the models geometry. This is okay for things that rotate or spin, such as propeller blades on a helicopter. But it's a pain when you have something like a car door and you obviously need the anchor point to be where the car door hinges are located.
I can reposition the anchor point manually after import of the 3D model into HF3P, which takes a bit of time so I'm wondering if there's a way to preserve a 3D models anchor point the way it was exported out of Blender, I'm thinking of other solutions but I was wondering if there's a way to do it in HF3P because not everyone knows how to use Blender or other 3D apps. Just looking for a simple solution that everyone can easily use.