Video ClipsClips may take a few minutes to load completely, and will play automatically. If you cannot see the video below, download it here Right click on clip and set your zoom to 200% for close up viewing This blower has a large cut into the cast iron. We used a grinding wheel to bevel halfway through, and made the repair with our 77 cast iron rod and a 130 mini amp welder. After making the repair we used a grinding wheel to smooth the surface, and the part was as good as new.