A curved archway is being cut on this beam for one of the timber accents in the remodel we are doing in Nelson, BC. Where walls were removed to give the house a more open feel, the curved archways will still give the sense of an entrance into the living room area.
The curved cut was done with a chain saw, using an attached base plate that was custom fabricated for this application. The cut is done 1/8″ from the layout line, and then it is finished to the line with a belt sander. A gas powered chain saw is useful for cutting outdoors, but an electric chain saw is necessary for indoor use.