77MM ND Circular filter sliding mounting adapter

thingiverse

had brought circular ND filter but found with the filter fixed the camera could not focus, hence required an easy way to add and remove the filter without disturbing the focus. I have a sony A6300, hence fixed a 40.5 to 58 adapter on the Lens, and then Adapter Mount Threaded to the adapter ring, 77MM Filter is threaded to the Slide Mount, which is slided into place