I will soon receive the OF, and I decide to buy an 80mm spindle because there is at least a viable solution in 3D printing. I put my hopes on the final share of Hrubeskyr 80mm spindle mount.
But seeing your beautiful 3d representation it reminded me the idea I had before to radically modify the original 65mm spindle mounting block. But I do not have the dimensions of the OF spindle support to evaluate the feasibility. In your opinion, could the current 65mm OF spindle mounting block be cut in a plane close to the rail support to accommodate the RoverCNC Solid Spindle Mount there, in a similar way to your scheme. According to the dimensions of the diagram provided 80mm Solid Spindle Mount – RoverCNC Online Store it would be necessary to be able to make 4 holes minimum separated by 80mm between the rail support and separated by 30mm on the height (the OF support does not seem high enough to pass the 6 holes provided by RoverCNC)
Is it realistic to your opinion?