Shaft registered as immovable object, but only sometimes. Why? It seems any block in that specific location of that contraption is immovable, even a block of dirt. However, it does not happen
Hex bolt with four holes through shaft, for Beardmore Heavy Oil diesel engine, from Airship R. 101 | Science Museum Group Collection
Arrow shaft straigthener from Lachmirowice. The object is re-made from... | Download Scientific Diagram