This is the tool to have if you are going to do more than just small timberframing. What it saves you in time would make the cost a non-issue. Drooooool :)

Perfect for the timber framing and log home industries, this innovative power tool notches and/or cuts through-holes in thick wood stock quickly, neatly and accurately. Extremely portable with its built-in carrying handle and 37.4 lb weight. The powerful 12amp motor can easily handle any size job and the externally accessible brushes makes service quick and easy. Equipped with a standard 23/32" (18.25mm) Cutter Chain, you can max cut up to 12-1/8" wide and 6-1/8" deep. Five additional Cutter Chain widths, from 5/8" to 15/16", are also available (Optional). Expect the best and get it with Makita Power Tools.

from $1305.5