Track Saw System

A track saw system including a track having a pair of longitudinally-elongated rails extending along its top surface. Each rail has an angled sidewall extending from the top of the track at an angle of 45 degrees. The system further includes a base plate adapter having a pair of grooves formed in its bottom surface that are similar in size, shape, and relative position to the rails. The distance between the angled walls of the grooves is shorter than the distance between the angled walls of the rails. The rails of the track thus fit within the grooves of the base plate adapter with the angled sidewalls of the rails flatly engaging the angled sidewalls of the grooves. A firm, non-binding fit is thereby maintained between the track and the base plate adapter regardless of any expansion or contraction of the track that might occur due to variations in temperature.