The Knife/dagger arrived yesterday and it is built very sturdy. The weight of this is impressive and helps very much in stabbing. After a thorough cleaning I just had to try it out on a beef roast my wife was getting ready to cook (she needed pockets to place the garlic in anyway).

I had no problem in getting the blade to penetrate the roast clear to the hilt. I am now doubting that this was ever intended to be a paper weight/letter opener but you never know.
Robert