Might make an interesting thread.
Whyoh why did I use a random cast iron welding rod that I'd had for 20 years to try a tooth repair on my rockwell 10" back gear. And why did I then compound the issue by using my rare as hens teeth new 16dp 20pa gear cutter on said welding.
What i ended up with is weld that will just about file and very nearly as hard as witches what'its and a Very, Very blunt cutter that i need to grind 2mm off to get right.
Sob !!!