The title of this thread may well have been the exact search string I put into Google the day I learned about DE shaving. I wanted to extend the life of my cartridges and ended up ditching them altogether.
The ultimate tensile strength of Copper is 210-220 MPa. The ultimate tensile strength of human hair is 380 MPa. Beard hair is tougher than Copper at the same thickness. There is no doubt that DE blade edges degrade from use. Teflon, Platinum and even Titanium DE blade edges degrade with use.
It's common practice to rub straight razors with oil. This keeps the air and water away from the metal preventing corrosion. Maybe they stored blades in Oil?
(Edit: Some people strop their blades to extend the life. I've heard hand stropping, leather stropping, jeans stropping and corking but results always vary)
You have to remember that when you are talking about the blade, you really mean the blade edge which can be measured in microns. This vastly reduces the material's ability to withstand damage. The Copper is a metaphorical aid to help visualise the surprising strength hair has. Some people like blades after the smooth coating has come off which is ironic or steelronic?I understand your logic.
But...I don't get the reference to copper. Aren't our blades made of steel?
Here is a 1970 article from Popular Science that explains how chromium hardness coatings were expected to improve blade life. Corrosion is a large part of the story: but this innovation came from Schick. Naturally Gillette followed.
https://books.google.com/books?id=V...AWHnqmYDA&ved=0CCYQ6AEwAA#v=onepage&q&f=false
Anybody here have a scanning electronic microscope?
... a friend of a friend once told him that he was able to get 5,000 per gallon with his car. Not knowing what was going on, he called the dealership, which told him to come in right away. He saw them take something out from the engine and now his car was now getting normal mileage per gallon....
Gotta love the stories about that secret carburetor the oil companies squashed as well. Make the car get 3000% of the available chemical energy out of every gallon of gas. The drawings probably got burned up in a fire.
Gotta love the stories about that secret carburetor the oil companies squashed as well. Make the car get 3000% of the available chemical energy out of every gallon of gas. The drawings probably got burned up in a fire.
It shouldn't take too much gas to get your perpetual motion engine running. Your Carnot go?Unfortunately this obvious (highlighted) point is lost on many folks, as they failed to pay attention in science class. This unfortunately bleeds over into other ideas in which getting something for nothing is a key element .
But what if this "carburator" wasn't what we'd imagine.. it would implode the fuel and create a cold nuclear fission reaction? It becomes no longer a question of chemical energy but molecular/atomic released energy instead