I've used these wheels in the med. and finer grits on small bits with the above posted technique Cratex - Rubberized Abrasives Catalog - Large Straight Wheels
This is from...
Metals Handbook vol. 2
eighth edition
"heat treating, cleaning and finishing"
American Society for Metals
I didn't find MA5Mb but this book is circa 1971
Amazing ....... First weld, fantastic, can't wait to see your future welds.
Do you have any welding equipment of your own, or do you only get to weld at school?