Circular saw 2 x 4 straight cut

thingiverse

I got tired of making cuts on 2 x 4's that were not straight, So i threw together this simple design that I can clamp to a 2 x 4 and run the base of a cirular saw up against the base and cut a square line. The measurement on the drop down is the distance the blade is away from the side. if you dont want that feature then make sure to extend your cuts but what your measurment is. My saw it is 1 5/16" I also used M3 x 15 mm for the screws that hold the upright on. I have also included the f3d file if you would like to edit the design.