I bought an alaskan mill , and saw with a 24 inch bar a few years ago , and it's just sitting in the shed now. It was fine on pine , but not good enough for oak. If I need to cut oak planks now , I just do it freehand.
I did a knife making course a few years back , and the guy had built his own log cabin in his woodland ( he even forged his own 16 inch nails). It's was only a single room , but it was amazing.