Cut Off Guide for a Circular Saw

Step 4 The second weld

The second weld attaches the angle iron to the brace piece. See the photo in step 3. A tack weld or two will do. But, before making the weld, try to make the angle iron exactly perpendicular to the long guide that goes against the saw base. Use a good square. See my Instructable on making a square to be truly square.

http://www.instructables.com/id/Making_a_Square_Square/