Portable sawmill

A method for constructing a device for holding and moving a powered sawhead having a powered saw blade along a linear path using a portable guide rail base, comprising:

• selecting the portable guide rail base which has a first side member extending lengthwise, a second side member extending lengthwise, and rungs extending perpendicularly between said first side member and said second side member, wherein at least one side member comprises a guide rail base flange extending lengthwise located on top of the portable guide rail base;
• slidably attaching a carriage base to said portable guide rail base by a slidable attachment, said carriage base having an assembly capable of engaging either said first side member, said second side member, or both the first side member and the second side member, said carriage base having an inner flange and an outer flange, and said slidable attachment being connected by said outer flange resting on an outer surface of said guide rail base flange and said inner flange resting on an inner surface of said guide rail base flange;
• such that, when attached, the carriage base is movable via a portion of the carriage base sliding along at least one rail defined by said side member(s);
• attaching a bottom end of a vertical post to a bottom end to the carriage base;
• slidably attaching a vertical slide to said vertical post so that said vertical slide extends horizontally therefrom and is capable, when extending horizontally from said post, of slidable vertical displacement along said post, said displacement being lockable;
• attaching said vertical slide to said powered sawhead so that, when the device is so constructed, and said portable guide rail base is in a generally horizontal position, the powered saw blade is capable of cutting in a generally horizontal plane via movement of the carriage base along the at least one rail defined by said side member(s) of the portable guide rail base.