I an disappointed any time I see or hear of a narrow gauge car of any RR or vintage being demolished or re-purposed. This one has some real interesting points to it. I found it interesting that the car was sold with the trucks and draft gear. Being as those are some of the expensive stuff to find, they are usually not a part of the deal. And especially for the price paid.
As John C said in his post, there are several good penetrating oils that could, and should, have been tried before total destruction. Another method that could have been used in the old fashioned 'hot wrench'. Heat the nut to cherry red and I have never had one that would not come loose. Yes, a large bucket of water would be in order. I was disappointed at the amount of metal work that could have been saved and traded or donated back to the rail road.
Kyle talked about the nuts on the truss rod ends. I seriously hope he does not intend to remove the truss rods. That would be suicidal for the frame of that car.
I was pleased to see his short bits on the joinery used in the construction of the car, typical of all cars of that vintage. Nice save on the header with RR and car number.
I am going to keep following this. Although I have no interest in a Tiny Home, I am curious what the floor plan is going to look like. 210-250 square feet isn't much to work with.
FWIW
Bob C.