Montana Homestead Dovetail: The logs are flattened on one or two sides with the ends "dove tailed" The gap between the logs are filled with "backer-rod" insulation and chinking.
Full Scribe: The logs are saddle notched on the ends and "V" notched the entire length of the log. Each log fits tightly on top of the log below leaving no gaps. Upon assembly, the "V" notch is filled with insulation.
Round Chinker: The logs are saddle notched on the ends with the middle of the log left whole leaving a gap between the logs. The gap is filled with "backer-rod" insulation and Chinking.