insuring simplicity of assembly and precision of mating parts the frame comprises a generally elongated column which is formed with a flat rib 14 of generally major width an outer rib 18 of lesser width and an intermediate rib 16 as shown in fig2 the wide rib 14 on the blade side of the frame has a curved portion 20 which extends about the blade and the blade wheel to provide a protective guard the frame casting includes a plate 22 integral therewith which carries mounting blocks hereinafter described to support the subassembly of the prime mover and driven blade wheel plate 22 also bears along its lower edge flange 24 and brace 26 which provide support for the attachment of the table 10 the opposite end of frame 12 has a 90 degree bend section 25 and terminates with channel 24 the channel is open ended at the outboard end of the frame and has a transverse open ended slot 26 to receive the saw blade tension and tracking adjustment means 30 described in greater detail hereinafter the lower end of the frame bears arm 28 which is bored at 32 to receive rod 34 which carries on its inboard end blade guide assembly 36 which is secured thereto by machine screw 38 that extends into a bore in the lower leg of a generally l shaped guide bracket 40 the guide bracket is bored and tapped to provide mounting for a plurality of blade rollers 42 and 44 which are mounted to engage opposite faces of the blade 11 and provide guides for lateral stability of the blade 11 the bracket 40 also supports blade roller 46 which is.