Mike, I have to tell you that your 77 cast iron electrodes are fantastic--I need to order more to have it on hand.
I just welded a small block Chevy 400 engine with a broken ear on the starter mount. The engine was sitting on a 3 wheel engine stand and fell over breaking the mount. I placed a mild steel bolt in the broken mounting hole and built the whole corner back up, then I removed the bolt and re-tapped the bolt hole with no problem. It's looking pretty good.
I work on hard to find and restore irreplaceable antique cast iron parts. Your 77 welding rods are better than anything I've tried in the past. I'll try to remember to send you photos of my next cast iron job.
We have instructional / informative videos available in seven categories, seperated by metal type. Choose a category, and browse through our video library - you will find a great deal of information to help you with your projects.