The Beam Machine attaches securely to any chain saw and converts it into a portable sawmill. Simply set your chain saw in the special clamp, tighten two screws, then secure a 2 x 4 in place as a guide on top of the log. The Beam Machine slides along the 2 x 4, guiding the chain saw as it makes a straight cut. Roll the log a quarter turn for the second cut, and so on. After 4 cuts, you have a beam. Application: Coverts saw into portable sawmill