>>2943068
Its pretty easy to freehand beams if you use snap line to guide your bar. You can also cut notches and then use hewing axe to take off the chunks. You want to use axe anyways to make the final finishing job because sawed off surface rots faster. Axe will seal the wood and moisture cant penetrate as easily.

Milling logs eat up chains like crazy. Maybe one board and your chain needs sharpening. Buy a lot of chains to circle through. You need atleast 80cc saw to get things done. Use shortest bar you can get away with to minimize drag. Milling boards freehand is hard so you need atleast something like pic related.