What the Heck Is what is a hollow grind?
https://www.goodreads.com/topic/show/20934945-the-advanced-guide-to-a-guide-to-blacksmith-tools-for-beginners
Blacksmithing is one of the few trades, if any; where the artisan can make the basic tools he requires using the very same blacksmithing process for which he will be using the tools. Indeed, for many years, a blacksmith