Life never stops, EngineDIY will never stop

This is the result in the second half of 2023. I thought that the horizontal twin-cylinder was a sure thing, but it turned out that I couldn't make the crankshaft no matter what I did. The left and right shafts were not concentric. Then I tried to make a single-cylinder double-output shaft. The result is still different, so now I can only put it on hold.