Alaskan Mill Mrk III with 36'' rails Mill boards up to 34" wide. Side brackets adjust so will work on chainsaw bars from 16" to 42". Clamps directly onto the bar - there is no need to drill the bar in any way. Typically your cutting width will be 5" less than the full length of the bar. Capable of cutting 1/2" up to 14" thick boards. Also look at the vertical cutting mini mill, which makes an excellent companion to the Alaskan Mrk III.